mm-video:vidc: Set max performance level for high framerate content

Performance issue is observed with 60fps content as the vcodec clock
set based on number of macroblocks and framerate is not sufficient.
This fix checks for the framerate and sets max performance level if
fps is more than 60 (59 to be more precise)

Change-Id: I5d41643a32ec895565406fadec04dc95e04655a4
Signed-off-by: Praveen Chavan <pchava@codeaurora.org>