drm: msm: update rsc sequence for power collapse

SDE RSC driver should disable the force_idle on
solver mode enable. Encoder should also disable the
vsync_enable state on pingpong before updating rsc
state to clk state.

Change-Id: I8362cceeaa91e853ab0ae047c2bb96427f862dd0
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>