target/arm: Support MSR access to ALLINT

Support ALLINT msr access as follow:
	mrs <xt>, ALLINT	// read allint
	msr ALLINT, <xt>	// write allint with imm

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240407081733.3231820-6-ruanjinjie@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
1 file changed