common symbols for window and text

src/bg.c

@@ -42,7 +42,7 @@ static struct BgConfig2 sGpuBgConfigs2[4];
 static u32 sDmaBusyBitfield[4];
 static u8 gpu_tile_allocation_map_bg[0x100];
 
-u32 gWindowTileAutoAllocEnabled;
+bool32 gWindowTileAutoAllocEnabled;
 
 static const struct BgConfig sZeroedBgControlStruct = { 0 };