document battle_setup symbols

include/battle_setup.h

@@ -16,9 +16,9 @@ void ClearTrainerFlag(u16);
 void BattleSetup_StartTrainerBattle(void);
 u8 *BattleSetup_GetScriptAddrAfterBattle(void);
 u8 *BattleSetup_GetTrainerPostBattleScript(void);
-void sub_80803FC(void);
+void SetBattledTrainerFlag(void);
 u8 sub_8080060(void);
-u8 sub_80803CC(void);
+u8 GetTrainerBattleMode(void);
 u16 sub_80803D8(void);
 
 #endif // GUARD_BATTLE_SETUP_H