to define UBOOT_ARCH, we map kernel architectures to U-Boot architectures.
In the case of arm64 kernel, we should map to arm U-boot architecture.
This patch add the exception rule to the map_uboot_arch function.
(From OE-Core rev: 0b891265716c414ade29d587fc1a3c4ea7beadbe)
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>