Name nullsubs in battle ctlrs

include/battle_controllers.h

@@ -232,7 +232,7 @@ void BtlController_EmitResetActionMoveSelection(u8 bufferId, u8 caseId);
 void BtlController_EmitCmd55(u8 bufferId, u8 arg1);
 
 // player controller
-void nullsub_13(void);
+void PlayerDummy(void);
 void SetControllerToPlayer(void);
 void PlayerHandleGetRawMonData(void);
 void SpriteCB_FreePlayerSpriteLoadMonSprite(struct Sprite *sprite);

include/pokemon.h

@@ -448,7 +448,7 @@ u8 GetPlayerPartyHighestLevel(void);
 u16 FacilityClassToPicIndex(u16 facilityClass);
 bool8 ShouldIgnoreDeoxysForm(u8 caseId, u8 battlerId);
 void SetDeoxysStats(void);
-u16 sub_80447AC(void);
+u16 GetUnionRoomTrainerPic(void);
 u16 sub_80447F0(void);
 void CreateEventLegalEnemyMon(void);
 void HandleSetPokedexFlag(u16 nationalNum, u8 caseId, u32 personality);