[media] platform: compile VIDEO_CODA with COMPILE_TEST

Currently, IMX_VDOA and VIDEO_CODA only builds on ARCH_MXC.

That prevented me to build-test the driver, causing a bad patch
to be applied, and to see other warnings on this driver.

Hans wrote a similar patch, but his version was fold with a
warning fixup hunk.
So, I opted to keep my version.
Reported-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by Hans Verkuil <hans.verkuil@cisco.com>
Acked-by Philipp Zabel <p.zabel@pengutronix.de>

drivers/media/platform/Kconfig

@@ -151,7 +151,7 @@ if V4L_MEM2MEM_DRIVERS
 
 config VIDEO_CODA
 	tristate "Chips&Media Coda multi-standard codec IP"
-	depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MXC
+	depends on VIDEO_DEV && VIDEO_V4L2 && (ARCH_MXC || COMPILE_TEST)
 	depends on HAS_DMA
 	select SRAM
 	select VIDEOBUF2_DMA_CONTIG