drm: Set new active mode based on current bit clock rate.

SurfaceFlinger is not aware about bit clock rates corresponds to each mode,
thus coming active mode bit clock rate may be different from current mode
clock rate.
Hence map new active mode corresponding to current mode's bit clock rate.

Change-Id: I936e830c5d65de5e9ef2857aa81b610a01fda1ce
1 file changed