[VIDEO]: XVR-500 and XVR-2500 need FB=y.

Otherwise the allmodconfig build breaks.
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/video/Kconfig

@@ -1535,7 +1535,7 @@ config FB_LEO
 
 config FB_XVR500
 	bool "Sun XVR-500 3DLABS Wildcat support"
-	depends on FB && PCI && SPARC64
+	depends on (FB = y) && PCI && SPARC64
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1548,7 +1548,7 @@ config FB_XVR500
 
 config FB_XVR2500
 	bool "Sun XVR-2500 3DLABS Wildcat support"
-	depends on FB && PCI && SPARC64
+	depends on (FB = y) && PCI && SPARC64
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT