split off pokemon_storage_system_4

ld_script.txt

@@ -131,6 +131,8 @@ SECTIONS {
         src/pokemon_storage_system.o(.text);
         src/pokemon_storage_system_2.o(.text);
         src/pokemon_storage_system_3.o(.text);
+        src/pokemon_storage_system_4.o(.text);
+        src/pokemon_storage_system_5.o(.text);
         asm/pokemon_storage_system.o(.text);
         src/pokemon_icon.o(.text);
         src/script_movement.o(.text);
@@ -453,6 +455,8 @@ SECTIONS {
         src/trainer_card.o(.rodata);
         src/pokemon_storage_system_2.o(.rodata);
         src/pokemon_storage_system_3.o(.rodata);
+        src/pokemon_storage_system_4.o(.rodata);
+        src/pokemon_storage_system_5.o(.rodata);
         data/pokemon_storage_system.o(.rodata);
         src/pokemon_icon.o(.rodata);
         src/fldeff_cut.o(.rodata);