MC: Provide MCAssembler with a TargetAsmBackend.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98222 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index f51be42..277cf92 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -991,8 +991,9 @@
 
 /* *** */
 
-MCAssembler::MCAssembler(MCContext &_Context, raw_ostream &_OS)
-  : Context(_Context), OS(_OS), SubsectionsViaSymbols(false)
+MCAssembler::MCAssembler(MCContext &_Context, TargetAsmBackend &_Backend,
+                         raw_ostream &_OS)
+  : Context(_Context), Backend(_Backend), OS(_OS), SubsectionsViaSymbols(false)
 {
 }