[MIPS] Add remaining parts for building tests for MIPS

tests/sel_ldr/nacl.scons

 # -*- python -*-
 # 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.
 
 Import('env')
 
 non_exit_nexe = env.ComponentProgram('non_exit', 'non_exit.c',
                                      EXTRA_LIBS=['${NONIRT_LIBS}'])
 
 node = env.SelUniversalTest(
     'hard_shutdown_test.out',
     non_exit_nexe,
     sel_universal_flags=['--uses_reverse_service',
                          '--no_app_channel',
                          '--command_file',
                          env.File('hard_shutdown_test.stdin')],
     )
+
+# TODO(petarj): The tests hangs indefinite on QEMU MIPS. Enable it when fixed.
+is_broken=env.Bit('target_mips32') and env.UsingEmulator()
+
 env.AddNodeToTestSuite(node,
                        ['small_tests'],
-                       'run_hard_shutdown_test')
+                       'run_hard_shutdown_test',
+                       is_broken=is_broken)
 
 node = env.SelUniversalTest(
     'force_shutdown_test.out',
     non_exit_nexe,
     sel_universal_flags=['--uses_reverse_service',
                          '--no_app_channel',
                          '--command_file',
                          env.File('hard_shutdown_test.stdin')],
     )
 env.AddNodeToTestSuite(node,
                        ['small_tests'],
-                       'run_force_shutdown_test')
+                       'run_force_shutdown_test',
+                       is_broken=is_broken)