hexagon: tiling, tracing and optimizations for unary ops (#25474)

• hexagon: tile wide rows in pointwise unary ops to avoid VTCM overflow

• unary: reject permuted tensors for now (not used by models)

• hex-unary: replace divs with fastdiv

• hex-unary: add vtcm layout and host computed kernel params

• hex-unary: move fastdiv init into kernel params

• hex-unary: add specialized thread functions to improve generated code

• hex-unary: tracing instrumentation for unary ops

• hex-unary: factor out hvx kernels, streamline and remove more duplication

• ggml-hexagon: fix std::min collision with Windows min macro

• hex-cmake: make lto build happy

Co-authored-by: Max Krasnyansky [email protected]