Rename CONFIG_FSL_DCU_FB to CONFIG_VIDEO_FSL_DCU_FB
and convert it to Kconfig.
Signed-off-by: NSanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: NStefan Agner <stefan.agner@toradex.com>
Reviewed-by: NAlison Wang <alison.wang@nxp.com>