configs/engicam_imx6qdl_icore_qt5: Select the KMSRO gallium driver
After migrating to Mesa 19.2 the imx-drm_dri.so is no longer installed
unless the kmsro gallium driver is selected, so explicitly select
BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_KMSRO to fix the problem.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>