Some macros in test-assembler-mips have the same name
as newly introduced macros in sid sysroot. We rename
them in order to prevent compilation problems

Change-Id: I84d9562f39c1aca8ac20e979466862228f438425
Reviewed-on: https://chromium-review.googlesource.com/942322Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#51649}