hw/misc/xlnx-versal-crl: Build it only once

hw/misc/xlnx-versal-crl: Build it only once

hw/misc/xlnx-versal-crl.c doesn't require "cpu.h"
anymore.  By removing it, the unit become target
agnostic: we can build it once. Update meson.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240118200643.29037-15-philmd@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>