drm/radeon/dpm: add helper to fetch the vrefresh of the current mode

Needed for DPM on CI.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-07-19 12:42:08 -04:00
commit 6bb5c0d74c
2 changed files with 19 additions and 0 deletions