ARM64: Move from FPRegister to VRegister based API (continued (2)).

Move newly added occurrences of `vixl::aarch64::FPRegister` to
`vixl::aarch64::VRegister` in `compiler/optimizing/common_arm64.h`.

Test: mmma art
Bug: 144490441
Change-Id: Id343d64fa00373994db7bf11f5e737cca3a4f2fd
diff --git a/compiler/optimizing/common_arm64.h b/compiler/optimizing/common_arm64.h
index 36e68e4..41f284f 100644
--- a/compiler/optimizing/common_arm64.h
+++ b/compiler/optimizing/common_arm64.h
@@ -107,9 +107,9 @@
   return vixl::aarch64::VRegister::GetSRegFromCode(location.reg());
 }
 
-inline vixl::aarch64::FPRegister HRegisterFrom(Location location) {
+inline vixl::aarch64::VRegister HRegisterFrom(Location location) {
   DCHECK(location.IsFpuRegister()) << location;
-  return vixl::aarch64::FPRegister::GetHRegFromCode(location.reg());
+  return vixl::aarch64::VRegister::GetHRegFromCode(location.reg());
 }
 
 inline vixl::aarch64::VRegister FPRegisterFrom(Location location, DataType::Type type) {