ALSA: hda - Introduce hda_call_check_power_status() helper

Replace the explicit ifdef check and call of check_power_status ops with
a new helper function, hda_call_check_power_status().

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 62c7022..ebf8eb02 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -989,6 +989,18 @@
 int snd_hda_resume(struct hda_bus *bus);
 #endif
 
+#ifdef CONFIG_SND_HDA_POWER_SAVE
+static inline
+int hda_call_check_power_status(struct hda_codec *codec, hda_nid_t nid)
+{
+	if (codec->patch_ops.check_power_status)
+		return codec->patch_ops.check_power_status(codec, nid);
+	return 0;
+}
+#else	
+#define hda_call_check_power_status(codec, nid)		0
+#endif
+
 /*
  * get widget information
  */