hexagon: MUL_MAT and MUL_MAT_ID rework : 32x32 tiled weight repack, kernel-params, cached graphs (#24954)

• hex-mm: new weight layout and fusion updates

• hvx-mm: unroll the new tiled vec_dots to optimize hvx register util

• hex-mm: optimize dyn.quant format for q8_0 and q8_1 to reduce overhead in vec_dots.

• hvx-mm: parallel quantizer per block for large rows

• hvx-mm: simplify and futher optimize dyn.quant and vec_dots

• hvx-mm: keep intermediate per tile accumulators in fp16

• hmx-mm: optimize weight dequant by aligning the repacked tiles with the DMA

• hmx-mm: remove qweight scratch and just use vtcm_weight

• hmx-mm: remove all unused and obsolete code

• hmx-mm: the new tiled repack format is here to stay -- rename all x4x2 to _tiled

• hmx-mm: improve activation processing with dma prefetch

• hex-mm: fix hmx/hvx fallback logic and MUL_MAT_ID allocation (unbreaks OLMoE)

• hex-mm: align the weight tiles with dma just like we did in hmx-mm

• hex-mm: factor out common mm bits into htp/matmul-ops.h

• hex-mm: start moving mm kernel selection to the host

• hex-mm: move all of the matmul param compute into the host

• hmx-mm: restore pipelined mode

• hmx-mm: unroll the dequant functions to optimize register usage

• hmx-mm: further improve activation process

• hex-mm: use vtcm_seq_alloc for all vtcm allocations and define more common functions

• hex-mm: improve mm optimizer to acount for number of activation threads

• hex-mm: fix matmul-id kernel params selection (unbreaks OLMoE and LFM)

• hexagon: remove support for arch < v73 since HMX is now required for most use-cases

• hex-mm: cleanup naming for consistency

• hex-mm: make sure matmul fusion accounts for vtcm allocation

• hex-mm: minor cleanup for kernel_params definition

• hex-mm: replace hardcoded limits with proper checks for vtcm requirements

• hex-mm: add support for non-tiled mm as a fallback option and factor out hvx kernels into separate header

• hex-mm: remove unused functions

• hex-mm: add shorthand for MM_SELECT in run-tool script

• hvx-mm: factor out hvx/hmx microkernels and unify matmul entry and dispatch

• hex-mm: further cleanup matmul fallback path

• hex-mm: refactor matmul entry point and dispatch a bit further

• hexagon: update cmake build to enable hmx for everything

• hex-ops: optimize kernel_param updates and include summary in the logs

• hex-mm: add support for GGML_HEXAGON_MM_SELECT

• hex-mm: add hex-common header

• hex-mm: pass correct number of tasks to workpool

• hex-mm: add proper checks for no-work in dyn.quant tasks

• hex-mm: convert all quantizers into a macro

• hex-mm: fix hvx-flat fallback to pass all MUL_MAT tests

• hex-mm: vectorize q8_1 quantizer

• hex-mm: improve fused ffn mm stride handling

• hex-mm: consistent use of n_threads and pipeline in kernel_params

• hexagon: minor formatting

• hex-mm: update MUL_MAT_ID kernel_param handling to make sure host/npu are in sync

• hvx-mm: go back to accumulating in fp32 in tiled hvx kernels, more accurate and same perf

• hvx-mm: unroll the loops and remove masking that is not needed for tiled accums

• hmx-mm: optimize activation processing (slit loops, some unrolling, etc)

• hmx-mm: minor optimization for output processing

• hex-mm: consistent use of uint32_t and size_t in mm kernels

• hex-mm: remove legacy restrictions for rows to be multiple of 256

• hexagon: replace sprintf with snprintf

• hex-mm: relax hardcoded nrows checks and rely on VTCM size requirements

• hexagon: minor alignment fix

• hexagon: fix trailing spaces

• hex-mm: relax padding from 256 to 128 (leftovers)

• hex-mm: remove redundant checks for weight align to 128

we always use 2D dma for the weights and align them properly

• hmx-mm: MUL_MAT_ID better work distribution between hvx threads and hmx tracing

• hex-mm: specialize per-token mmid activation handling

• hex-profile: update python scripts to handle kernel-params section in the logging output

• hex-mm: move n_prefetch (aka dma_depth) into kernel params and remove unused fields

• hex-trace: use easier to parse format, simply and fix post-proc scripts

• hmx-mm: relax 32 row limit for output processing which helps utilization

• hmx-mm: use start-chunk idx for tracing info

• hmx-mm: parameterize activation dma pipeline

• hexagon: add support for simple graph caching to avoid recomputing kernel-params

• hex-mm: remove left-over repack functions

• hex-mm: tighten n_prefetch asserts

• hex-mm: remove duplicate round/align_up helper

• hexagon: cleanup common header used in host/npu

• hexagon: update early wakeup threshold

• hmx-mm: define cost constants and update solver to assume that repacked ne[1] is padded to 32

• hmx-mm: make precompute_matmul a bit more readable (split into smaller functions, etc)

• hex-mm: remove n_threads constraint

• hex-mm: minor formatting updates

• hex-mm: remove obsolete profiling logs

• hex-mm: restore hardcode gate to refuse lm-head to avoid repacking that tensor