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

src/trusted/validator_ragel/dfa_validator_x86_32.gyp

 # Copyright (c) 2012 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.
 
 # Build the specific library dependencies for validating on x86-32 using the
 # DFA-based validator.
 {
   'includes': [
     '../../../build/common.gypi',
   ],
   'conditions': [
     ['target_arch=="ia32"', {
       'targets': [
         {
           'target_name': 'dfa_validate_x86_32',
           'type': 'static_library',
           'sources' : [
             'dfa_validate_32.c',
             'dfa_validate_common.c',
             'validator_features_validator.c',
             'gen/validator_x86_32.c',
           ],
         },
       ],
     }],
-    [ 'target_arch=="arm" or target_arch=="x64"', {
-      'targets': []
-    }],
   ],
 }