[All i.MX8 Boards][i.MX8] Re-add DRM entries in seco_imx8_linux_defconfig
Issue: These seco_imx8_linux_defconfig entries are mandatory for gpu accelation on imx8 boards. Patched in a0c9a54a.
Issue: These seco_imx8_linux_defconfig entries are mandatory for gpu accelation on imx8 boards. Patched in a0c9a54a.