[ALSA] alsa core: convert to list_for_each_entry*

This patch converts most uses of list_for_each to list_for_each_entry all
across alsa. In some place apparently an item can be on a list with
different pointers so of course that isn't compatible with list_for_each, I
therefore didn't touch those places.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
index 0cfa06c..972f934 100644
--- a/sound/core/seq/seq_virmidi.c
+++ b/sound/core/seq/seq_virmidi.c
@@ -81,13 +81,11 @@
 					 struct snd_seq_event *ev)
 {
 	struct snd_virmidi *vmidi;
-	struct list_head *list;
 	unsigned char msg[4];
 	int len;
 
 	read_lock(&rdev->filelist_lock);
-	list_for_each(list, &rdev->filelist) {
-		vmidi = list_entry(list, struct snd_virmidi, list);
+	list_for_each_entry(vmidi, &rdev->filelist, list) {
 		if (!vmidi->trigger)
 			continue;
 		if (ev->type == SNDRV_SEQ_EVENT_SYSEX) {