convert more constants

asm/macros/pokemon_data.inc

@@ -52,5 +52,5 @@
 	.byte \max_level
 	.endif
 
-	.2byte SPECIES_\species
+	.2byte \species
 	.endm

asm/trade.s

@@ -1,5 +1,7 @@
 	.include "asm/macros.inc"
-	.include "constants/constants.inc"
+	.include "constants/gba_constants.inc"
+	.include "constants/misc_constants.inc"
+	.include "constants/species_constants.inc"
 
 	.syntax unified