Fix building BEAGLEBONE images with Crochet using the
sysutils/u-boot-beaglebone port:
- In arm/BEAGLEBONE.conf, set EMBEDDEDPORTS to the sysutils/u-boot-beaglebone port.
- In arm/release.sh, remove BEAGLEBONE from setting WANT_UBOOT
- In tools/arm/crochet-BEAGLEBONE.conf, override the beaglebone_check_uboot(), and set BEAGLEBONE_UBOOT to /tmp/external/u-boot-beaglebone, and create symlinks to the u-boot files in /usr/local/share/u-boot-beaglebone and the uEnv.txt file in crochet/board/Beaglebone/files.
Sponsored by: The FreeBSD Foundation