[ALSA] clean up device types symbols

Modules: ALSA Core,ALSA Minor Numbers

Remove the unused and undefined symbols SNDRV_DEVICE_TYPE_{MIXER,
PCM_PLOOP,PCM_CLOOP}, and introduce a new symbol SNDRV_MINOR_GLOBAL
for non-card-specific devices like the sequencer or the timer.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/include/sound/minors.h b/include/sound/minors.h
index b7b0d83..a17b5c9 100644
--- a/include/sound/minors.h
+++ b/include/sound/minors.h
@@ -27,8 +27,9 @@
 #define SNDRV_MINOR(card, dev)		(((card) << 5) | (dev))
 
 #define SNDRV_MINOR_CONTROL		0	/* 0 - 0 */
-#define SNDRV_MINOR_SEQUENCER		1
-#define SNDRV_MINOR_TIMER		(1+32)
+#define SNDRV_MINOR_GLOBAL		1	/* 1 */
+#define SNDRV_MINOR_SEQUENCER		(SNDRV_MINOR_GLOBAL + 0 * 32)
+#define SNDRV_MINOR_TIMER		(SNDRV_MINOR_GLOBAL + 1 * 32)
 #define SNDRV_MINOR_HWDEP		4	/* 4 - 7 */
 #define SNDRV_MINOR_HWDEPS		4
 #define SNDRV_MINOR_RAWMIDI		8	/* 8 - 15 */
@@ -39,12 +40,9 @@
 
 #define SNDRV_DEVICE_TYPE_CONTROL	SNDRV_MINOR_CONTROL
 #define SNDRV_DEVICE_TYPE_HWDEP		SNDRV_MINOR_HWDEP
-#define SNDRV_DEVICE_TYPE_MIXER		SNDRV_MINOR_MIXER
 #define SNDRV_DEVICE_TYPE_RAWMIDI	SNDRV_MINOR_RAWMIDI
 #define SNDRV_DEVICE_TYPE_PCM_PLAYBACK	SNDRV_MINOR_PCM_PLAYBACK
-#define SNDRV_DEVICE_TYPE_PCM_PLOOP	SNDRV_MINOR_PCM_PLOOP
 #define SNDRV_DEVICE_TYPE_PCM_CAPTURE	SNDRV_MINOR_PCM_CAPTURE
-#define SNDRV_DEVICE_TYPE_PCM_CLOOP	SNDRV_MINOR_PCM_CLOOP
 #define SNDRV_DEVICE_TYPE_SEQUENCER	SNDRV_MINOR_SEQUENCER
 #define SNDRV_DEVICE_TYPE_TIMER		SNDRV_MINOR_TIMER