[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/hdspm.c b/sound/pci/rme9652/hdspm.c
index 6e95857..d2ae638 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -3575,11 +3575,9 @@
 	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;
@@ -3791,10 +3789,8 @@
 		other = hdspm->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)