Cleanup and documentation of teachy_tv

asm/battle_tower.s

@@ -2894,7 +2894,7 @@ _080E6FF2:
 	bl sub_80E712C
 	ldr r4, _080E703C @ =gSaveBlock2Ptr
 	ldr r0, [r4]
-	ldr r1, _080E704C @ =gUnknown_2023E8A
+	ldr r1, _080E704C @ =gBattleOutcome
 	ldrb r1, [r1]
 	ldr r2, _080E7050 @ =0x0000055d
 	adds r0, r2
@@ -2930,7 +2930,7 @@ _080E703C: .4byte gSaveBlock2Ptr
 _080E7040: .4byte 0x0000055c
 _080E7044: .4byte gSpecialVar_0x8004
 _080E7048: .4byte 0x00000564
-_080E704C: .4byte gUnknown_2023E8A
+_080E704C: .4byte gBattleOutcome
 _080E7050: .4byte 0x0000055d
 _080E7054: .4byte 0x0000055e
 	thumb_func_end sub_80E6FB8
@@ -3612,7 +3612,7 @@ _080E754C: .4byte gSaveBlock2Ptr
 	thumb_func_start sub_80E7550
 sub_80E7550: @ 80E7550
 	push {lr}
-	ldr r0, _080E7564 @ =gUnknown_2023E8A
+	ldr r0, _080E7564 @ =gBattleOutcome
 	ldrb r0, [r0]
 	cmp r0, 0x3
 	bne _080E756C
@@ -3621,7 +3621,7 @@ sub_80E7550: @ 80E7550
 	strb r0, [r1]
 	b _080E7590
 	.align 2, 0
-_080E7564: .4byte gUnknown_2023E8A
+_080E7564: .4byte gBattleOutcome
 _080E7568: .4byte gStringVar4
 _080E756C:
 	cmp r0, 0x1