[MIPS] Add support to gyp files to build Native Client inside of Chromium

src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp

Index: src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp
diff --git a/src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp b/src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp
index 9db4c892ac660ddb78ffbcfb47f1232d5ba7b5a2..fad571c3e34816219a295b3e4db61109fae9100b 100644
--- a/src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp
+++ b/src/trusted/validator/x86/ncval_reg_sfi/ncval_reg_sfi.gyp
@@ -136,5 +136,8 @@
     [ 'target_arch=="arm"', {
       'targets': []
     }],
+    [ 'target_arch=="mipsel"', {
+      'targets': []
+    }],
   ],
 }