eb_cpu5282: fix CONFIG_DM_VIDEO build warnings

Remove CONFIG_VIDEO dependency to fix board removal warnings.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Jens Scharsig <esw@bus-elektronik.de>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index b1cb745..2f3bb4b 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -972,4 +972,11 @@
 	help
 	  Support display of bitmaps file with 32-bit-per-pixel.
 
+config VIDEO_VCXK
+	bool "Enable VCXK video controller driver support"
+	default n
+	help
+	  This enables VCXK driver which can be used with VC2K, VC4K
+	  and VC8K devices on various boards from BuS Elektronik GmbH.
+
 endmenu