Fix the NACL_INSTR_* names that I just checked in to NACL_INSTR_ARM_*, as suggested by mseaborn.

src/trusted/service_runtime/arch/arm/nacl_text_pad_test.S

 /*
  * Copyright (c) 2011 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.
  */
 #include "native_client/src/include/arm_sandbox.h"
 #include "native_client/src/trusted/service_runtime/include/bits/nacl_syscalls.h"
 #include "native_client/src/trusted/service_runtime/nacl_config.h"
 
 /* the macros below are used with movw/movt and absolute values */
@@ skipping 206 matching lines @@
         nop
 
         nop
         nop
         bic r3, r3, #0xc000000f
         blx r3
 #if defined(PNACL_AS)
 /* NOTE: unlike x86 the alignment directive on ARM takes
    the logarithm of the alignment */
 #define POW2_BIGGER_THAN_DOT 14
-        .align32 POW2_BIGGER_THAN_DOT, NACL_INSTR_HALT_FILL
+        .align32 POW2_BIGGER_THAN_DOT, NACL_INSTR_ARM_HALT_FILL
         .fill (TEXT_EXTEND - (1 << POW2_BIGGER_THAN_DOT))/4, 4, \
-              NACL_INSTR_HALT_FILL
+              NACL_INSTR_ARM_HALT_FILL
 #else
-        .fill (TEXT_EXTEND - (. - start_of_text))/4, 4, NACL_INSTR_HALT_FILL
+        .fill (TEXT_EXTEND - (. - start_of_text))/4, 4, \
+              NACL_INSTR_ARM_HALT_FILL
 #endif
 
 end_of_text:
 
 #if defined(EXPECTED_RODATA)
         .section .rodata
 ro_str: .ascii "Hello world\n"
         /*      123456789012 */
 #endif