[ARM]: Extend -mfpu options for half-precision and vfpv3xd

removing default label in switch as it results.
This is part of earlier commit http://reviews.llvm.org/D1064

Subscribers: llvm-commits
llvm-svn: 240932

llvm/lib/Support/TargetParser.cpp

@@ -318,8 +318,6 @@ bool ARMTargetParser::getFPUFeatures(unsigned FPUKind,
     Features.push_back("-vfp4");
     Features.push_back("-fp-armv8");
     break;
-  default:
-    return false;
   }
 
   // crypto includes neon, so we handle this similarly to FPU version.