r219608 - [AArch64] Fixup test from A53 erratum patch after buildbot failures

[Justin Bogner]

Tim Northover <t.p.northover at gmail.com> writes:
>>     cfe/trunk/test/Driver/aarch64-fix-cortex-a53-835769-cg.c
>
> This isn't really a driver test, since it's going all the way to
> CodeGen. I get the impression that while both are frowned on, testing
> drivery things in test/CodeGen is more normal than testing CodeGen in
> test/Driver.

This test doesn't actually need the driver anyway - it can use cc1 and
pass the backend option directly. The other test ensures that the driver
passes the right flags on.