disp: msm: trigger same BW vote if rsc state updates

SDE RSC and core perf avoids BW vote trigger if current
and previous AB/IB BW votes are same. This may cause
issue if target enters in idle power collapse state
with stale AMC vote. This invalidates the sleep vote
and does not remove disp_drv vote. This change triggers
BW vote on all rsc state updates.

Change-Id: Id738206ade0feeb067dfda3d06cc0c7e19d66df1
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>