Rename wVramState to wStateFlags and use flag constants (#1078)

constants/wram_constants.asm

@@ -91,6 +91,12 @@ DEF RIGHT_MASK EQU 1 << RIGHT
 	shift_const FACE_RIGHT ; 1
 DEF FACE_CURRENT EQU 0
 
+; wStateFlags
+DEF SPRITE_UPDATES_DISABLED_F             EQU 0
+DEF LAST_12_SPRITE_OAM_STRUCTS_RESERVED_F EQU 1
+DEF TEXT_STATE_F                          EQU 6
+DEF SCRIPTED_MOVEMENT_STATE_F             EQU 7
+
 ; wPokemonWithdrawDepositParameter::
 DEF PC_WITHDRAW       EQU 0
 DEF PC_DEPOSIT        EQU 1