Hi,
You can try to set a different console in the u-boot bootargs.
For example I tried this with the fsl-image-gui image generated with Yocto.
setenv mmcargs 'setenv bootargs console=ttymxc3,${baudrate} console=tty1,${baudrate} ${smp} root=${mmcroot}'
And see the bootlogs in the LVDS display and the UART console.
Best Regardds,
Alejandro