Fix emission of move immediate for ARM integrated assembler.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4334
R=jpp@chromium.org

Review URL: https://codereview.chromium.org/1397043003 .
diff --git a/src/IceInstARM32.h b/src/IceInstARM32.h
index 60b2484..680c30a 100644
--- a/src/IceInstARM32.h
+++ b/src/IceInstARM32.h
@@ -1175,6 +1175,8 @@
   void emitSingleDestMultiSource(const Cfg *Func) const;
   void emitSingleDestSingleSource(const Cfg *Func) const;
 
+  void emitIASSingleDestSingleSource(const Cfg *Func) const;
+
   Variable *DestHi = nullptr;
 };