ALSA: asound.h - use SNDRV_CTL_ELEM_ID_NAME_MAXLEN

we have defined SNDRV_CTL_ELEM_ID_NAME_MAXLEN as size of name array so use
this define instead of numeric value

Signed-off-by: Vinod Koul <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

include/uapi/sound/asound.h

···
 	snd_ctl_elem_iface_t iface;	/* interface identifier */
 	unsigned int device;		/* device/client number */
 	unsigned int subdevice;		/* subdevice (substream) number */
-	unsigned char name[44];		/* ASCII name of item */
+	unsigned char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];		/* ASCII name of item */
 	unsigned int index;		/* index of item */
 };