drm/radeon/dce3: use a single PPLL for all DP displays

If possible, use a single PPLL for multiple DP displays
on DCE3.x.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-09-12 17:39:57 -04:00
commit 9dbbcfc689