Pass -EL for MIPS cross builds to allow for using a bi-endian toolchain...

tools/gyp/configurations_make.gypi

 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
   'variables': {
     'dart_debug_optimization_level%': '2',
   },
   'target_defaults': {
     'configurations': {
@@ skipping 153 matching lines @@
         'cflags': [ '-O3', '-m32', '-msse2' ],
         'ldflags': [ '-m32', ],
       },
 
       # MIPS cross-build
       'Dart_Linux_xmips_Base': {
         'abstract': 1,
         'target_conditions': [
           ['_toolset=="target"', {
             'cflags': [
+              '-EL',
               '-march=mips32',
               '-mhard-float',
               '-fno-strict-overflow',
             ],
+            'ldflags': [
+              '-EL',
+            ],
           }],
           ['_toolset=="host"',{
             'cflags': [ '-O3', '-m32', '-msse2' ],
             'ldflags': [ '-m32' ],
         }]]
       },
 
       # MIPS native build
       'Dart_Linux_mips_Base': {
         'abstract': 1,
@@ skipping 33 matching lines @@
             ],
           }],
         ],
         'cflags': [
           '-O3',
         ],
       },
     },
   },
 }