hw: Add a Kconfig switch for the TYPE_CPU_CLUSTER device

The cpu-cluster device is only needed for some few arm and riscv
machines. Let's avoid compiling and linking it if it is not really
necessary.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240415065655.130099-3-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
4 files changed