https://github.com/pftf/RPi4 unusable for FreeBSD since at least Sept 2023

Booting stops with the error "armv8crypto0: CPU lacks AES instructions"

see https://github.com/pftf/RPi4/issues/242

I can confirm v1.35 throws this error but haven't tested either earlier
or non-release versions. This version was released on the 5th June 2023
and is the latest -release version. The PR was generated in September.

When the arm64-rpi image is generated, what content does it source for
the efi part? When does it get sourced?

Is it a pftf/RPi4 problem or a freebsd one?

(possibly related - i was unable to get 14-stable installed via 
the usual method:

1. install to usb3 then leave the mmcsd in and reboot
2. it fails to boot to usb. log in and mount the usb3 msdos 
    partition on /mnt and cp -a /boot/efi [?] to /mnt then reboot
[?] i forget the actual path - it's whatevr gets mounted as the msdos
partition on the mmcsd).

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