media: zoran: update TODO

Update the TODO of the zoran driver

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/staging/media/zoran/TODO

-The zoran driver is marked deprecated. It will be removed
-around May 2019 unless someone is willing to update this
-driver to the latest V4L2 frameworks (especially the vb2
-framework).
+
+How to test the zoran driver:
+- RAW capture
+	mplayer tv:///dev/video0 -tv driver=v4l2
+
+- MJPEG capture (compression)
+	mplayer tv:///dev/video0 -tv driver=v4l2:outfmt=mjpeg
+	TODO: need two test for both Dcim path
+
+- MJPEG play (decompression)
+	ffmpeg -i test.avi -vcodec mjpeg -an -f v4l2 /dev/video0
+	Note: only recent ffmpeg has the ability of sending non-raw video via v4l2
+
+	The original way of sending video was via mplayer vo_zr/vo_zr2, but it does not compile
+	anymore and is a dead end (usage of some old private ffmpeg structures).
+
+TODO
+- fix the v4l compliance "TRY_FMT cannot handle an invalid pixelformat"
+- Filter JPEG data to made output work