e605df9de0
Since we have now EFI framebuffer enabled for ARM64 if we boot on a board with an screen, u-boot will set up a EFI GOP framebuffer and we won't boot using the serial console. Also on RPI3 the firmware always setup the framebuffer area resulting in u-boot always setup the EFI GOP and FreeBSD never using the serial console. Reviewed by: gjb, lwshu (previous version) Differential Revision: https://reviews.freebsd.org/D16472