target/loongarch: Implement Chip Configuraiton Version Register(0x0000)

According to the 3A5000 manual 4.1 implement Chip Configuration
Version Register(0x0000).

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230227071046.1445572-1-gaosong@loongson.cn>
2 files changed