Simplify check_tls on ARM, now that llvm emits mapping symbols.

src/untrusted/irt/check_tls.gypi

 # 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.
 
 # This file is used via 'includes' by an irt_test.gyp both here and in
 # chromium/src/ppapi/native_client.  The including file must first include
 # build/common.gypi to get 'python_exe' set.  The including file must first
 # set the variable 'irt_test_nexe' (e.g. to 'irt_core'); setting that to ''
 # (the empty string) instructs this file to run the test on the
 # nacl_irt_*.nexe file instead of a named one.  The including file must
@@ skipping 53 matching lines @@
             }],
             ['target_arch=="ia32"', {
               'variables': {
                 'check_tls_arch': 'x86-32',
                 'nexe_suffix': 'newlib_x32',
                 'nacl_irt_name': 'nacl_irt_x86_32',
               },
             }],
             ['target_arch=="arm"', {
               'variables': {
-                'check_tls_arch': 'arm-pnacl',
+                'check_tls_arch': 'arm',
                 'nexe_suffix': 'newlib_arm',
                 'nacl_irt_name': 'nacl_irt_arm',
               },
             }],
           ],
           'action': ['>(python_exe)',
                      '<(DEPTH)/native_client/src/untrusted/irt/check_tls.py',
                      '<(check_tls_arch)', '<(nacl_objdump)',
                      '<@(_inputs)', '<@(_outputs)'],
         },
       ],
     },
   ],
 }