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

src/trusted/validator/x86/ncval_seg_sfi/ncval_seg_sfi.gyp

 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # TODO(bradchen): eliminate need for the warning flag removals below
 {
   'includes': [
     '../../../../../build/common.gypi',
   ],
   'target_defaults': {
@@ skipping 157 matching lines @@
           'dependencies': [
             'ncdis_seg_sfi_x86_64',
             '<(DEPTH)/native_client/src/trusted/validator_x86/validator_x86.gyp:nccopy_x86_64',
             '<(DEPTH)/native_client/src/trusted/validator/x86/validate_x86.gyp:ncval_base_x86_64'          ],
           'hard_dependency': 1,
         }],
     }],
     [ 'target_arch=="arm"', {
       'targets': []
     }],
+    [ 'target_arch=="mipsel"', {
+      'targets': []
+    }],
   ],
 }