media: tda1997x: fix get_edid

set_edid never wrote the new EDID to state->edid.edid, it was only
written to the hardware. Since get_edid returned state->edid.edid,
it was never returning the right EDID.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: added missing commit log]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/tda1997x.c

@@ -1884,6 +1884,10 @@ static int tda1997x_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
 	for (i = 0; i < 128; i++)
 		io_write(sd, REG_EDID_IN_BYTE128 + i, edid->edid[i+128]);
 
+	/* store state */
+	memcpy(state->edid.edid, edid->edid, 256);
+	state->edid.blocks = edid->blocks;
+
 	tda1997x_enable_edid(sd);
 
 	return 0;