Since the EDK2 had already support LoongArch, update build bios,
and update cpu type, cross-tools.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230227035905.1290953-1-gaosong@loongson.cn>