Update for API change in LLVM: ARMTargetParser class is just the ARM
namespace.

llvm-svn: 246368
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 34a8da6..54201aa 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -104,10 +104,10 @@
 }
 
 static const char *ArmMachOArchNameCPU(StringRef CPU) {
-  unsigned ArchKind = llvm::ARMTargetParser::parseCPUArch(CPU);
+  unsigned ArchKind = llvm::ARM::parseCPUArch(CPU);
   if (ArchKind == llvm::ARM::AK_INVALID)
     return nullptr;
-  StringRef Arch = llvm::ARMTargetParser::getArchName(ArchKind);
+  StringRef Arch = llvm::ARM::getArchName(ArchKind);
 
   // FIXME: Make sure this MachO triple mangling is really necessary.
   // ARMv5* normalises to ARMv5.