[ALSA] Remove sound/driver.h

This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/oxygen/oxygen.c

@@ -28,7 +28,6 @@
  * GPIO 1 -> DFS1 of AK5385
  */
 
-#include <sound/driver.h>
 #include <linux/pci.h>
 #include <sound/core.h>
 #include <sound/initval.h>

sound/pci/oxygen/oxygen_io.c

@@ -17,7 +17,6 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <sound/driver.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
 #include <sound/core.h>

sound/pci/oxygen/oxygen_lib.c

@@ -17,7 +17,6 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <sound/driver.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>

sound/pci/oxygen/oxygen_mixer.c

@@ -17,7 +17,6 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <sound/driver.h>
 #include <linux/mutex.h>
 #include <sound/ac97_codec.h>
 #include <sound/asoundef.h>

sound/pci/oxygen/oxygen_pcm.c

@@ -17,7 +17,6 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <sound/driver.h>
 #include <linux/pci.h>
 #include <sound/control.h>
 #include <sound/core.h>

sound/pci/oxygen/virtuoso.c

@@ -30,7 +30,6 @@
  * GPIO 8 -> ? (amps enable?)
  */
 
-#include <sound/driver.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <sound/control.h>