[media] omap4iss: Remove VIDEO_OMAP4_DEBUG Kconfig option

The option was supposed to control the definition of the DEBUG macro in
the Makefile but has been left unused by mistake. Given that debugging
should be enabled using dynamic printk, remote the Kconfig option.

[Reworked the commit message]
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/staging/media/omap4iss/Kconfig

@@ -4,9 +4,3 @@ config VIDEO_OMAP4
 	select VIDEOBUF2_DMA_CONTIG
 	---help---
 	  Driver for an OMAP 4 ISS controller.
-
-config VIDEO_OMAP4_DEBUG
-	bool "OMAP 4 Camera debug messages"
-	depends on VIDEO_OMAP4
-	---help---
-	  Enable debug messages on OMAP 4 ISS controller driver.