Also build and deploy the EFI stub. SYSTEMD_BOOT_EFI_ARCH can be dropped
as image-uefi.conf now sets EFI_ARCH.
Changes originally taken from meta-intel.
(From OE-Core rev: 00191504bd9321334a5c01b95179ed15b063f1b6)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>