Round up clock computation and limit drain latency to maximum of 0x7F.
Signed-off-by: NGajanan Bhat <gajanan.bhat@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>