bpc.mitm/exo: support pmic reboot/shutdown on mariko (thanks @CTCaer)

libraries/libstratosphere/include/stratosphere/ams/ams_exosphere_api.hpp

@@ -25,6 +25,7 @@ namespace ams::exosphere {
     void ForceRebootToRcm();
     void ForceRebootToIramPayload();
     void ForceRebootToFatalError();
+    void ForceRebootByPmic();
     void ForceShutdown();
 
     bool IsRcmBugPatched();