[media] Fix vino compilation

A trivial fix so that vino can find the saa7191.h header.

[mchehab@redhat.com: Fix merge conflict]
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/Makefile

@@ -43,3 +43,5 @@ obj-$(CONFIG_VIDEO_SH_VOU)		+= sh_vou.o
 obj-y	+= davinci/
 
 obj-$(CONFIG_ARCH_OMAP)	+= omap/
+
+ccflags-y += -I$(srctree)/drivers/media/i2c