TargetRegistry: Fix create{AsmInfo,MCDisassembler} to return non-const objects.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99097 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp
index cac6962..c4a7408 100644
--- a/lib/Target/PowerPC/PPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PPCTargetMachine.cpp
@@ -20,7 +20,7 @@
 #include "llvm/Support/FormattedStream.h"
 using namespace llvm;
 
-static const MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
+static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
   Triple TheTriple(TT);
   bool isPPC64 = TheTriple.getArch() == Triple::ppc64;
   if (TheTriple.getOS() == Triple::Darwin)