Fix bug from 7761. Have pnacl toolchain tester actually test sbtc for arm.
Fix bug from 7761. Have pnacl toolchain tester actually test sbtc for arm.

BUG= http://code.google.com/p/nativeclient/issues/detail?id=2581
TEST= none

Review URL: https://chromiumcodereview.appspot.com/9595011

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@7951 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client