[Mips] Set mips32 as default CPU for MIPS32 Android

Change default CPU for MIPS32 Android. Now it is mips32 (rev1).

Differential Revision: http://reviews.llvm.org/D20313

llvm-svn: 269754
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index b6d86e4..206c32e 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1183,8 +1183,10 @@
   }
 
   // MIPS64r6 is the default for Android MIPS64 (mips64el-linux-android).
-  if (Triple.isAndroid())
+  if (Triple.isAndroid()) {
+    DefMips32CPU = "mips32";
     DefMips64CPU = "mips64r6";
+  }
 
   // MIPS3 is the default for mips64*-unknown-openbsd.
   if (Triple.getOS() == llvm::Triple::OpenBSD)