MFC r320252, r320686, r325769:
r320252:
In release/release.sh: - Rename chroot_arm_armv6_build_release() to chroot_arm_build_release() and make it hardware agnostic (such as armv6 -vs- armv7 -vs- arm64). - Evaluate EMBEDDED_TARGET differently so release/tools/arm.subr can be used for arm/armv6 and arm64/aarch64. - Update comments and copyright. In release/tools/arm.subr: - In arm_create_disk(), change the default alignment from 63 to 512k, fixing a boot issue on arm64 and EFI. [1] - Update comments and copyright.
r320686:
Fix the ftp-stage target for RPI3 images by loosening the constraints on the TARGET and TARGET_ARCH variables.
r325769:
Update the GUMSTIX image build to use arm/arm TARGET/TARGET_ARCH. Update the TARGET/TARGET_ARCH matching in release/release.sh and release/Makefile.mirrors for simplification.
Note: The RPI3.conf addition from r320252 is not included, as the
11-STABLE image fails to boot in my testing.
Sponsored by: The FreeBSD Foundation