mlxbf-bootctl: Support setting the ARM boot state to "OS up"

The BlueField has internal registers to store the ARM boot states.
Support setting the BlueField ARM boot state to "OS up".

Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20230809162857.21243-3-asmaa@nvidia.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>