Update Qualcomm Camera Subsystem driver document for the PIX interface
and format conversion support.
Signed-off-by: NTodor Tomov <todor.tomov@linaro.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>