ALSA: hda - Add snd_hda_codec_flush_*_cache() aliases

It makes easier to understand although these are identical with
snd_hda_codec_resume_*() functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index caf6fa5..a654757 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -634,7 +634,7 @@
 		(dir == HDA_OUTPUT ? AC_AMP_SET_OUTPUT : AC_AMP_SET_INPUT);
 
 	/* flush all cached amps at first */
-	snd_hda_codec_resume_amp(codec);
+	snd_hda_codec_flush_amp_cache(codec);
 
 	/* we care only right channel */
 	val = snd_hda_codec_amp_read(codec, nid, 1, dir, 0);