Allow flag/var counts to be updated alongside values

include/constants/opponents.h

@@ -859,6 +859,7 @@
 
 // NOTE: Because each Trainer uses a flag to determine when they are defeated, there is only space for 9 additional trainers before trainer flag space overflows
 //       More space can be made by shifting flags around in constants/flags.h or changing how trainer flags are handled
+//       MAX_TRAINERS_COUNT can be increased but will take up additional saveblock space
 
 #define TRAINERS_COUNT                      855
 #define MAX_TRAINERS_COUNT                  864