system/memory: Introduce ldm_p() and stm_p() load/store helpers Introduce load/store helpers which take a MemOp argument. Inspired-by: Paolo Bonzini <pbonzini@redhat.com> Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20260118193509.42923-5-philmd@linaro.org>