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

tests/dynamic_code_loading/dynamic_load_test.c

 /*
  * 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.
  */
 
 #include "native_client/tests/dynamic_code_loading/dynamic_load_test.h"
 
 #include <assert.h>
 #include <errno.h>
@@ skipping 64 matching lines @@
   fill_int32(data, size, 0xe1a00000); /* NOP (MOV r0, r0) */
 #else
 # error "Unknown arch"
 #endif
 }
 
 void fill_hlts(uint8_t *data, size_t size) {
 #if defined(__i386__) || defined(__x86_64__)
   memset(data, 0xf4, size); /* HLTs */
 #elif defined(__arm__)
-  fill_int32(data, size, NACL_INSTR_HALT_FILL);
+  fill_int32(data, size, NACL_INSTR_ARM_HALT_FILL);
 #else
 # error "Unknown arch"
 #endif
 }
 
 /*
  * Getting the assembler to pad our code fragments in templates.S is
  * awkward because we have to output them in data mode, in which the
  * assembler wants to output zeroes instead of NOPs for padding.
  */
@@ skipping 385 matching lines @@
   assert(errno == EFAULT);
   /* The correct range should work, though. */
   rc = nacl_dyncode_delete(load_addr, sizeof(buf));
   assert(rc == 0);
 }
 
 void check_region_is_filled_with_hlts(const char *data, size_t size) {
 #if defined(__i386__) || defined(__x86_64__)
   uint8_t halts = 0xf4; /* HLT */
 #elif defined(__arm__)
-  uint32_t halts = NACL_INSTR_HALT_FILL;
+  uint32_t halts = NACL_INSTR_ARM_HALT_FILL;
 #else
 # error "Unknown arch"
 #endif
   const char *ptr;
   for (ptr = data; ptr < data + size; ptr += sizeof(halts)) {
     assert(memcmp(ptr, &halts, sizeof(halts)) == 0);
   }
 }
 
 /*
@@ skipping 95 matching lines @@
 
   /* Test again to make sure we didn't run out of space. */
   RUN_TEST(test_loading_code);
 
   return 0;
 }
 
 int main() {
   return RunTests(TestMain);
 }