Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136010 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PTX/PTXTargetMachine.cpp b/lib/Target/PTX/PTXTargetMachine.cpp
index ff9776a..03ae493 100644
--- a/lib/Target/PTX/PTXTargetMachine.cpp
+++ b/lib/Target/PTX/PTXTargetMachine.cpp
@@ -25,7 +25,7 @@
                                    bool useCFI,
                                    MCInstPrinter *InstPrint,
                                    MCCodeEmitter *CE,
-                                   TargetAsmBackend *TAB,
+                                   MCAsmBackend *MAB,
                                    bool ShowInst);
 }