Port over berry fix program

berry_fix/payload/asmdiff.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+OBJDUMP="$DEVKITARM/bin/arm-none-eabi-objdump -D -bbinary -marmv4t -Mforce-thumb"
+OPTIONS="--start-address=$(($1)) --stop-address=$(($1 + $2))"
+$OBJDUMP $OPTIONS baserom.gba > baserom.dump
+$OBJDUMP $OPTIONS payload.gba > payload.dump
+diff baserom.dump payload.dump