Key split restructure (#2168)

Author: mrgriffin

pokeemerald.sym

@@ -59360,11 +59360,11 @@
 086b384c g 00000000 voicegroup_rg_sevii_45
 086b3e4c g 00000000 voicegroup_rg_sevii_67
 086b429c l 00000000 voicegroup_rg_credits_drumset
-086b4698 l 00000000 KeySplitTable1
-086b46e0 l 00000000 KeySplitTable2
-086b4728 l 00000000 KeySplitTable3
-086b477c l 00000000 KeySplitTable4
-086b47c4 l 00000000 KeySplitTable5
+086b4698 l 00000000 keysplit_piano
+086b46e0 l 00000000 keysplit_strings
+086b4728 l 00000000 keysplit_trumpet
+086b477c l 00000000 keysplit_tuba
+086b47c4 l 00000000 keysplit_french_horn
 086b4830 g 00000000 ProgrammableWaveData_1
 086b4840 g 00000000 ProgrammableWaveData_2
 086b4850 g 00000000 ProgrammableWaveData_3