arm64: defconfig: Enable CONFIG_DRM_IMX_LCDIF

Enable CONFIG_DRM_IMX_LCDIF so that display output can be functional
by default on the imx8mp-evk board.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -849,6 +849,7 @@ CONFIG_DRM_MEDIATEK=m
 CONFIG_DRM_MEDIATEK_HDMI=m
 CONFIG_DRM_MXSFB=m
 CONFIG_DRM_MESON=m
+CONFIG_DRM_IMX_LCDIF=m
 CONFIG_DRM_PL111=m
 CONFIG_DRM_LIMA=m
 CONFIG_DRM_PANFROST=m