[gn build] Port c72a751

Author: llvmgnsyncbot

llvm/utils/gn/secondary/clang/lib/Headers/BUILD.gn

@@ -130,6 +130,7 @@ copy("Headers") {
     "amxfp16intrin.h",
     "amxfp8intrin.h",
     "amxintrin.h",
+    "amxtransposeintrin.h",
     "arm64intr.h",
     "arm_acle.h",
     "arm_cmse.h",