msm: mdss: configure the dynamic fps correctly

Dynamic fps should be set to max fps supported if it is out of
range. Configure the clocks based on the max fps set.

Change-Id: Ied2d4803c0840be00929b7093601aab39930b3e9
Signed-off-by: Ashish Garg <ashigarg@codeaurora.org>
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>