Fix documentation for R13 and R33 low bits.
Signed-off-by: Suhrid Subramaniam <suhrid.subramaniam@mediatek.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>