drm/amd/display: Add global lock function.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2017-06-20 10:42:33 -04:00 • committed by Alex Deucher
commit 03c8a5feee