ALSA: Replace the magic number 44 with const

The char arrays with size 44 are for the name string of
snd_ctl_elem_id.  Define the constant and replace the raw numbers with
it for clarifying better.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 90ff7a3..6e9876f 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -139,7 +139,7 @@
 #define DSP_SPEAKER_OUT_LATENCY         7
 
 struct ct_effect {
-	char name[44];
+	char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 	hda_nid_t nid;
 	int mid; /*effect module ID*/
 	int reqs[EFFECT_VALS_MAX_COUNT]; /*effect module request*/
@@ -270,7 +270,7 @@
 };
 
 struct ct_tuning_ctl {
-	char name[44];
+	char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 	hda_nid_t parent_nid;
 	hda_nid_t nid;
 	int mid; /*effect module ID*/
@@ -3103,7 +3103,7 @@
 				hda_nid_t pnid, hda_nid_t nid,
 				const char *name, int dir)
 {
-	char namestr[44];
+	char namestr[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 	int type = dir ? HDA_INPUT : HDA_OUTPUT;
 	struct snd_kcontrol_new knew =
 		HDA_CODEC_VOLUME_MONO(namestr, nid, 1, 0, type);
@@ -3935,7 +3935,7 @@
 static int add_fx_switch(struct hda_codec *codec, hda_nid_t nid,
 			 const char *pfx, int dir)
 {
-	char namestr[44];
+	char namestr[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
 	int type = dir ? HDA_INPUT : HDA_OUTPUT;
 	struct snd_kcontrol_new knew =
 		CA0132_CODEC_MUTE_MONO(namestr, nid, 1, type);