Recognize armv7a and friends as aliases for armv7-a etc. for the purpose

of architecture naming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198043 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/MCTargetDesc/ARMArchName.h

@@ -17,6 +17,7 @@ enum ArchKind {
   INVALID_ARCH = 0
 
 #define ARM_ARCH_NAME(NAME, ID, DEFAULT_CPU_NAME, DEFAULT_CPU_ARCH) , ID
+#define ARM_ARCH_ALIAS(NAME, ID) /* empty */
 #include "ARMArchName.def"
 };