[ARMv8] Change hasV8Fp to hasFPARMv8, and other command line options
to be more consistent.

llvm-svn: 190692
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index e9254c3..a227718e 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -81,7 +81,7 @@
   HasVFPv2 = false;
   HasVFPv3 = false;
   HasVFPv4 = false;
-  HasV8FP = false;
+  HasFPARMv8 = false;
   HasNEON = false;
   UseNEONForSinglePrecisionFP = false;
   UseMulOps = UseFusedMulOps;