[ALSA] dynamic minors (1/6): store device type in struct snd_minor

Instead of a comment string, store the device type in the snd_minor
structure.  This makes snd_minor more flexible, and has the nice side
effect that we don't need anymore to create a separate snd_minor
template for registering a device but can pass the file_operations
directly to snd_register_device().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index ffc13b9..947bf08 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -2444,18 +2444,12 @@
 	.mmap =		snd_pcm_oss_mmap,
 };
 
-static struct snd_minor snd_pcm_oss_reg =
-{
-	.comment =	"digital audio",
-	.f_ops =	&snd_pcm_oss_f_reg,
-};
-
 static void register_oss_dsp(struct snd_pcm *pcm, int index)
 {
 	char name[128];
 	sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
 	if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
-				    pcm->card, index, &snd_pcm_oss_reg,
+				    pcm->card, index, &snd_pcm_oss_f_reg,
 				    name) < 0) {
 		snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
 			   pcm->card->number, pcm->device);