V4L/DVB (3700): Remove obsolete commands from tvp5150.c

- Remove old DECODER_ commands from tvp5150.c, replacing them with newer
  ones if appropriate.
- Small VIDIOC_G_TUNER fixes in msp3400 and tuner.
- Fix VIDIOC_S_TUNER support in em28xx.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index a82a26a..b806999 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -703,7 +703,7 @@
 			msp_detect_stereo(client);
 		vt->audmode    = state->audmode;
 		vt->rxsubchans = state->rxsubchans;
-		vt->capability = V4L2_TUNER_CAP_STEREO |
+		vt->capability |= V4L2_TUNER_CAP_STEREO |
 			V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 		break;
 	}