V4L/DVB (9672): Allow opening more than one output at the same time

Some devices use more than one AC97 outputs. This patch allows such
devices to properly work.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index 206f59c..4d50d60 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -297,11 +297,11 @@
 };
 
 enum em28xx_aout {
-	EM28XX_AOUT_MASTER = 0,	/* should be the default */
-	EM28XX_AOUT_LINE,
-	EM28XX_AOUT_MONO,
-	EM28XX_AOUT_LFE,
-	EM28XX_AOUT_SURR,
+	EM28XX_AOUT_MASTER = 1 << 0,
+	EM28XX_AOUT_LINE   = 1 << 1,
+	EM28XX_AOUT_MONO   = 1 << 2,
+	EM28XX_AOUT_LFE    = 1 << 3,
+	EM28XX_AOUT_SURR   = 1 << 4,
 };
 
 struct em28xx_input {