[Bugfix][Build] Fix DeepGEMM CUDA 12.9 FP8 header visibility (#51003)

Signed-off-by: khluu <khluu000@gmail.com>

cmake/external_projects/deepgemm.cmake

@@ -30,7 +30,7 @@ else()
   # Keep in sync with tools/install_deepgemm.sh
   set(_DEEPGEMM_UPSTREAM_REPO "https://github.com/vllm-project/DeepGEMM.git")
   # TODO: switch to nv_dev branch after it support situ
-  set(_DEEPGEMM_UPSTREAM_TAG "f5a76426fa084087169693fd0cd815223576d6e9")
+  set(_DEEPGEMM_UPSTREAM_TAG "e21c821f39a2056d68067a466c64ddc942200106")
 
   set(_deepgemm_fc_root "${FETCHCONTENT_BASE_DIR}")
   if(NOT _deepgemm_fc_root)

tools/install_deepgemm.sh

@@ -8,7 +8,7 @@ set -e
 # Keep DEEPGEMM_GIT_REF in sync with cmake/external_projects/deepgemm.cmake
 DEEPGEMM_GIT_REPO="https://github.com/vllm-project/DeepGEMM.git"
 # NOTE: This is currently targeting nv-dev branch due to sm120 support
-DEEPGEMM_GIT_REF="f5a76426fa084087169693fd0cd815223576d6e9"
+DEEPGEMM_GIT_REF="e21c821f39a2056d68067a466c64ddc942200106"
 WHEEL_DIR=""
 
 # Parse command line arguments