ggml : support broadcast for ggml_soft_max_ext and ggml_flash_attn_ext#14435

ggerganov merged 4 commits intomasterggml-org/llama.cpp:masterfrom

gg/ggml-batch-soft-max-opsggml-org/llama.cpp:gg/ggml-batch-soft-max-opsCopy head branch name to clipboard