iwram and ewram vars to C

include/sound.h

@@ -28,6 +28,8 @@ void PlayCry2(u16 species, s8 pan, s8 volume, u8 priority);
 void PlayCry3(u16 species, s8 pan, u8 mode);
 void PlayCry4(u16 species, s8 pan, u8 mode);
 void PlayCry5(u16 species, u8 mode);
+void PlayCry6(u16 species, s8 pan, u8 mode);
+void PlayCryInternal(u16 species, s8 pan, s8 volume, u8 priority, u8 mode);
 bool8 IsCryFinished(void);
 void StopCryAndClearCrySongs(void);
 void StopCry(void);