V4L/DVB (7367): bug #10211: Fix depencencies for cx2341x

Fix for build #408
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/Kconfig

@@ -305,7 +305,7 @@ comment "MPEG video encoders"
 
 config VIDEO_CX2341X
 	tristate "Conexant CX2341x MPEG encoders"
-	depends on VIDEO_V4L2 && EXPERIMENTAL
+	depends on VIDEO_V4L2 && EXPERIMENTAL && VIDEO_V4L2_COMMON
 	---help---
 	  Support for the Conexant CX23416 MPEG encoders
 	  and CX23415 MPEG encoder/decoders.