drm/radeon: check firmware overrides for mclk/sclk ss

Check the overrides in the firmware info table before
enabling spread spectrum on the engine or memory clocks.

Some boards may have valid spread spectrum tables, but
shouldn't necessarily have it enabled.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-08-19 19:06:19 -04:00
commit 9cb84ab0ab