First patch for Mips subzero compiler

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4167

Move issue https://codereview.chromium.org/1159823004/ here so that
it's under the proper email.

Review URL: https://codereview.chromium.org/1169533003
diff --git a/src/IceTargetLowering.cpp b/src/IceTargetLowering.cpp
index 051b00d..b8f11bb 100644
--- a/src/IceTargetLowering.cpp
+++ b/src/IceTargetLowering.cpp
@@ -17,12 +17,14 @@
 
 #include "IceAssemblerARM32.h"
 #include "IceAssemblerX8632.h"
+#include "assembler_mips32.h"
 #include "IceCfg.h" // setError()
 #include "IceCfgNode.h"
 #include "IceOperand.h"
 #include "IceRegAlloc.h"
 #include "IceTargetLowering.h"
 #include "IceTargetLoweringARM32.h"
+#include "IceTargetLoweringMIPS32.h"
 #include "IceTargetLoweringX8632.h"
 
 namespace Ice {