Automerge: [gn build] Port de4bbbf

Author: llvmgnsyncbot

llvm/utils/gn/secondary/llvm/lib/Support/BUILD.gn

@@ -41,7 +41,7 @@ static_library("Support") {
     "APInt.cpp",
     "APSInt.cpp",
     "ARMAttributeParser.cpp",
-    "ARMBuildAttrs.cpp",
+    "ARMBuildAttributes.cpp",
     "ARMWinEH.cpp",
     "Allocator.cpp",
     "AutoConvert.cpp",