disp: msm: dsi: avoid seamless request for cwb transitions

There are some scenarios where a dfps request
during cwb session will result in cwb
encoder not getting disabled once the cwb
session is over. Add support to fail the
commit if any VRR or dynamic clock change
request is received during CWB transitions
to handle this.

Change-Id: Id3f192f79eac4ad0d7301bd34f7151fec243d685
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>