[MIPS] Add support for debug stub test

tests/debug_stub/nacl.scons

 # -*- python -*-
 # Copyright 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.
 
 Import('env')
 
 if not env.AllowInlineAssembly():
   Return()
 
 if env.UnderWindowsCoverage():
   Return()
 
 test_prog = env.ComponentProgram(
     'debugger_test', 'debugger_test.c',
     EXTRA_LIBS=['${PTHREAD_LIBS}', '${NONIRT_LIBS}'])
 
 sel_ldr_command = env.AddBootstrap(env.GetSelLdr(), ['-v', '-f', test_prog])
 
 is_broken = not env.Bit('nacl_static_link') or env.GetSelLdr() is None
 
-if env.Bit('build_arm'):
+if env.Bit('build_arm') or env.Bit('build_mips32'):
   # Use the system's 'nm' tool.  The NaCl toolchain will not be
   # available on the ARM hardware bots, but they will be running Linux
   # with a normal GNU toolchain available.
   nm_tool = 'nm'
 else:
   # Use the NaCl toolchain's 'nm' tool since it is not available
   # natively on Windows and Mac.
   nm_tool = '${NM}'
 
 node = env.CommandTest(
     'debug_stub_test.out',
     command=(['${PYTHON}', env.File('debug_stub_test.py'), '-v']
              + ['--', env.get('TARGET_FULLARCH'), nm_tool] + sel_ldr_command),
     extra_deps=[env.File('gdb_rsp.py')])
 env.AddNodeToTestSuite(node, ['medium_tests', 'nonpexe_tests'],
                        'run_debug_stub_test', is_broken=is_broken)
 env.TestBindsFixedTcpPort(node)