video: msm: Enable register dump on underrun

Change-Id: Ia4150c80c78e45b35ac7ab1fc1364d1f48a6dde5
video: msm: Fix underrun while scaling

 * Fix the clock calculation during scaling to avoid underruns.
 * Reproduce by launching and exiting Quadrant

Change-Id: I6f3405e726e20d42140c868bcc07a118f041ef9a