b10664

ggml-hexagon: add HTP unary ops for ABS and LOG (#27786)

Add HVX-accelerated implementations for GGML_OP_LOG and
GGML_UNARY_OP_ABS on the HTP backend.

• Register HTP_OP_UNARY_ABS and HTP_OP_UNARY_LOG in op_remap_to_htp()
• Add ABS and LOG to ggml_backend_hexagon_device_supports_op()
• Implement hvx_abs_f32_aa() in hvx-arith.h using hvx_vec_abs_f32()
• Implement hvx_log_f32_aa() in hvx-log.h using hvx_vec_log_f32()
• Add abs_f32() and log_f32() row-wise dispatch in unary-ops.c
• Define tiled and non-tiled task functions via DEFINE_UNARY_TASK and
  DEFINE_UNARY_TILED_TASK macros
• Route HTP_OP_UNARY_ABS and HTP_OP_UNARY_LOG through execute_op()
  in main.c

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/43530274

macOS/iOS:

• macOS Apple Silicon (arm64)
• macOS Apple Silicon (arm64, KleidiAI enabled) DISABLED
• macOS Intel (x64)
• iOS XCFramework

Linux:

• Ubuntu x64 (CPU)
• Ubuntu arm64 (CPU)
• Ubuntu s390x (CPU)
• Ubuntu x64 (Vulkan)
• Ubuntu arm64 (Vulkan)
• Ubuntu x64 (ROCm 7.14)
• Ubuntu x64 (OpenVINO)
• Ubuntu x64 (SYCL FP32)
• Ubuntu x64 (SYCL FP16)

Android:

• Android arm64 (CPU)

Windows:

• Windows x64 (CPU)
• Windows arm64 (CPU)
• Windows arm64 (OpenCL Adreno)
• Windows x64 (CUDA 12) - CUDA 12.4 DLLs
• Windows x64 (CUDA 13) - CUDA 13.3 DLLs
• Windows arm64 (CUDA 13) (preview) - CUDA 13.4 DLLs
• Windows x64 (Vulkan)
• Windows x64 (OpenVINO)
• Windows x64 (SYCL)
• Windows x64 (ROCm 7.14)

openEuler:

• DISABLED
• openEuler x86 (310p)
• openEuler x86 (910b, ACL Graph)
• openEuler aarch64 (310p)
• openEuler aarch64 (910b, ACL Graph)

UI:

• UI