Break up vl.h.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/audio/wavaudio.c b/audio/wavaudio.c
index 2dbc58c..11ca86d 100644
--- a/audio/wavaudio.c
+++ b/audio/wavaudio.c
@@ -21,7 +21,9 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include "vl.h"
+#include "hw/hw.h"
+#include "qemu-timer.h"
+#include "audio.h"
 
 #define AUDIO_CAP "wav"
 #include "audio_int.h"