fbdev/udlfb: Select correct helpers

The driver uses deferred I/O. Select the correct helpers via
FB_SYSMEM_HELPERS_DEFERRED in the Kconfig file.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-16-tzimmermann@suse.de

drivers/video/fbdev/Kconfig

@@ -1696,11 +1696,7 @@ config FB_UDL
 	depends on FB && USB
 	depends on FB_DEVICE
 	select FB_MODE_HELPERS
-	select FB_SYS_FILLRECT
-	select FB_SYS_COPYAREA
-	select FB_SYS_IMAGEBLIT
-	select FB_SYS_FOPS
-	select FB_DEFERRED_IO
+	select FB_SYSMEM_HELPERS_DEFERRED
 	help
 	  This is a kernel framebuffer driver for DisplayLink USB devices.
 	  Supports fbdev clients like xf86-video-fbdev, kdrive, fbi, and