target/loongarch: Implement xvclo xvclz

This patch includes:
- XVCLO.{B/H/W/D};
- XVCLZ.{B/H/W/D}.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230914022645.1151356-43-gaosong@loongson.cn>
4 files changed