[Intel-gfx] [PATCH i-g-t 1/2] igt: Move read_rc6_residency function to lib

[Szwichtenberg, Radoslaw]

On Tue, 2017-07-25 at 17:26 +0200, Ewelina Musial wrote:
> Gem_mocs_settings and pm_rc6_residency tests are defining
> the same functionality to read residency from sysfs.
> Moving that function to lib/igt_aux and updating tests.
> 
> Signed-off-by: Ewelina Musial <ewelina.musial at intel.com>
Reviewed-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg at intel.com>