Moved symbols in unknown_064800 to header file.

include/unknown_064800.h

@@ -0,0 +1,4 @@
+#ifndef _UNKNOWN_064800_H_
+#define _UNKNOWN_064800_H_
+
+#endif

src/unknown_064800.c

@@ -1,6 +1,8 @@
 /* The comment below is needed for this file to be picked up by generate_ld */
 /* RAM_POS: 0x80063C00 */
 
+#include "unknown_064800.h"
+
 #include "types.h"
 #include "macros.h"
 #include "audio_internal.h"