[gn] port 3ab8d2a

Might want to set this to True (and add a few source files to
builtins) at some point, but for now heal the bots.

Author: nico

llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn

@@ -64,6 +64,7 @@ write_cmake_config("lit_common_configured") {
     "SANITIZER_CAN_USE_CXXABI_PYBOOL=True",
     "SANITIZER_USE_STATIC_CXX_ABI_PYBOOL=False",
     "SANITIZER_USE_STATIC_LLVM_UNWINDER_PYBOOL=False",
+    "COMPILER_RT_HAS_AARCH64_SME=False",
     "COMPILER_RT_HAS_LLD_PYBOOL=True",
     "COMPILER_RT_HAS_GWP_ASAN_PYBOOL=False",
     "HAVE_RPC_XDR_H=0",