drm/omap: change "!CONFIG_FB_OMAP2" to "!FB_OMAP2"

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/omapdrm/Kconfig

@@ -1,7 +1,7 @@
 
 config DRM_OMAP
 	tristate "OMAP DRM"
-	depends on DRM && !CONFIG_FB_OMAP2
+	depends on DRM && !FB_OMAP2
 	depends on ARCH_OMAP2PLUS || ARCH_MULTIPLATFORM
 	depends on OMAP2_DSS
 	select DRM_KMS_HELPER