V4L/DVB (3582): Implement correct msp3400 input/output routing

- implement VIDIOC_INT_S_AUDIO_ROUTING for msp3400 and tvaudio
- use the new command in bttv, pvrusb2 and em28xx.
- remove the now obsolete MSP_SET_MATRIX from msp3400 (yeah!)
- remove the obsolete VIDIOC_S_AUDIO from msp3400.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 2d68a27..f62fd706b 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -28,8 +28,9 @@
 #include <linux/i2c.h>
 #include <linux/usb.h>
 #include <media/tuner.h>
-#include <media/audiochip.h>
+#include <media/msp3400.h>
 #include <media/tveeprom.h>
+#include <media/audiochip.h>
 #include <media/v4l2-common.h>
 
 #include "em28xx.h"
@@ -146,11 +147,12 @@
 		.input          = {{
 			.type     = EM28XX_VMUX_TELEVISION,
 			.vmux     = 0,
-			.amux     = 6,
+			.amux     = MSP_INPUT_DEFAULT,
 		},{
 			.type     = EM28XX_VMUX_SVIDEO,
 			.vmux     = 2,
-			.amux     = 1,
+			.amux     = MSP_INPUT(MSP_IN_SCART_1, MSP_IN_TUNER_1,
+					MSP_DSP_OUT_SCART, MSP_DSP_OUT_SCART),
 		}},
 	},
 	[EM2820_BOARD_MSI_VOX_USB_2] = {