msm: camera: isp: Add fps Blob support

Add fps blob to get the fps value from user space. Epoch interrupt
configuration will be depend on the fps value. Configure epoch
interrupt to half of the frame if fps value is 60, in rest all cases
configure epoch interrupt to 2/3 of the frame.

Change-Id: I2544a5e18895a983155c2f01e49920c9e1ec59b9
Signed-off-by: Chandan Kumar Jha <cjha@codeaurora.org>