ALSA: hda - Combine snd_hda_codec_flush_*_cache() to a single function

Since both snd_hda_codec_flush_amp_cache() and
snd_hda_codec_flush_cmd_cache() are called usually at the same time,
we can simply combine them to a single function,
snd_hda_codec_flush_cache().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 61085b3..cc73287 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -974,10 +974,8 @@
 int snd_hda_codec_update_cache(struct hda_codec *codec, hda_nid_t nid,
 			      int direct, unsigned int verb, unsigned int parm);
 void snd_hda_codec_resume_cache(struct hda_codec *codec);
-
-/* it's alias but a bit clearer meaning */
-#define snd_hda_codec_flush_cmd_cache(codec) \
-	snd_hda_codec_resume_cache(codec)
+/* both for cmd & amp caches */
+void snd_hda_codec_flush_cache(struct hda_codec *codec);
 
 /* the struct for codec->pin_configs */
 struct hda_pincfg {