AuroraUX toolchain should call GNU assembler not the Solaris assembler.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84469 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index fa7d61f..c9d0b26 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2162,7 +2162,7 @@
   }
 
   const char *Exec =
-    Args.MakeArgString(getToolChain().GetProgramPath(C, "as"));
+    Args.MakeArgString(getToolChain().GetProgramPath(C, "gas"));
   Dest.addCommand(new Command(JA, Exec, CmdArgs));
 }