msm: sde: define max allowed rot clock rate

This change defines max clock rate for rotator clock on
sm8150, and does not allow the session if calclauted value of
clock is greater than max rate.

Change-Id: I2e158d8ab78acea3b3f83dc2eeec438e0ac103b8
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>