Update ARM toolchain in TOOL_REVISIONS
Update ARM toolchain in TOOL_REVISIONS

This brings in the latest 4.8.1 build with assembly macro fixes.

BUG= none
TEST= trybots
R=bradnelson@google.com

Review URL: https://codereview.chromium.org/17552011

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11594 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client