vidc: Turbo mode for multiple instances.

If macroblock count per second goes beyond 1080p 30fps
bump clock to turbo mode on supported platforms

Change-Id: I48c34c9b6987706ea3e6b412b57791e2ae07ba52
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
Signed-off-by: Mohan Kumar Gubbihalli Lachma Naik <mgubbi@codeaurora.org>