[ALSA] Add snd_pcm_group_for_each_entry() for code cleanup

Added a new macro snd_pcm_group_for_each_entry() just for code cleanup.
Old macros, snd_pcm_group_for_each() and snd_pcm_group_substream_entry(),
are removed.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c
index cc3bdec..bd7dbd2 100644
--- a/sound/pci/rme9652/rme9652.c
+++ b/sound/pci/rme9652/rme9652.c
@@ -1992,11 +1992,9 @@
 	else
 		runtime->status->hw_ptr = 0;
 	if (other) {
-		struct list_head *pos;
 		struct snd_pcm_substream *s;
 		struct snd_pcm_runtime *oruntime = other->runtime;
-		snd_pcm_group_for_each(pos, substream) {
-			s = snd_pcm_group_substream_entry(pos);
+		snd_pcm_group_for_each_entry(s, substream) {
 			if (s == other) {
 				oruntime->status->hw_ptr = runtime->status->hw_ptr;
 				break;
@@ -2140,10 +2138,8 @@
 		other = rme9652->playback_substream;
 
 	if (other) {
-		struct list_head *pos;
 		struct snd_pcm_substream *s;
-		snd_pcm_group_for_each(pos, substream) {
-			s = snd_pcm_group_substream_entry(pos);
+		snd_pcm_group_for_each_entry(s, substream) {
 			if (s == other) {
 				snd_pcm_trigger_done(s, substream);
 				if (cmd == SNDRV_PCM_TRIGGER_START)