target/loongarch: Add cpu model 'max'

We use cpu la464 for the 'max' cpu.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231020084925.3457084-2-gaosong@loongson.cn>
1 file changed