Support for NYX to load from BOOT1/GPP/SD in that order, UMS option to mount whatever volume is selected as boot storage

bdk/utils/util.c

@@ -15,6 +15,7 @@
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <storage/boot_storage.h>
 #include <string.h>
 
 #include <mem/heap.h>
@@ -258,6 +259,7 @@ void power_set_state(power_state_t state)
 	u8 reg;
 
 	// Unmount and power down sd card.
+	boot_storage_end();
 	sd_end();
 
 	// De-initialize and power down various hardware.