boardctl: added the option to change the pm state

boards/boardctl.c

@@ -258,6 +258,10 @@ static inline int boardctl_pmctrl(FAR struct boardioc_pm_ctrl_s *ctrl)
         ctrl->state = pm_querystate(ctrl->domain);
         break;
 
+      case BOARDIOC_PM_CHANGESTATE:
+        ret = pm_changestate(ctrl->domain, ctrl->state);
+        break;
+
       default:
         ret = -EINVAL;
     }

include/sys/boardctl.h

@@ -225,7 +225,8 @@ enum boardioc_action_e
   BOARDIOC_PM_STAY,
   BOARDIOC_PM_RELAX,
   BOARDIOC_PM_STAYCOUNT,
-  BOARDIOC_PM_QUERYSTATE
+  BOARDIOC_PM_QUERYSTATE,
+  BOARDIOC_PM_CHANGESTATE
 };
 
 struct boardioc_pm_ctrl_s