arm64: defconfig: Enable the eLCDIF and Raydium RM67191 drivers

Select the eLCDIF display controller and Raydium RM67191 panel drivers,
so that MIPI DSI can be functional by default on a imx8mq-evk board.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>