ALSA: ice17xx: Constify strings and string arrays

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ice1712/ice1712.h

@@ -383,7 +383,7 @@ struct snd_ice1712 {
 	unsigned char (*set_mclk)(struct snd_ice1712 *ice, unsigned int rate);
 	int (*set_spdif_clock)(struct snd_ice1712 *ice, int type);
 	int (*get_spdif_master_type)(struct snd_ice1712 *ice);
-	char **ext_clock_names;
+	const char * const *ext_clock_names;
 	int ext_clock_count;
 	void (*pro_open)(struct snd_ice1712 *, struct snd_pcm_substream *);
 #ifdef CONFIG_PM_SLEEP
@@ -515,9 +515,9 @@ static inline u8 snd_ice1712_read(struct snd_ice1712 *ice, u8 addr)
 
 struct snd_ice1712_card_info {
 	unsigned int subvendor;
-	char *name;
-	char *model;
-	char *driver;
+	const char *name;
+	const char *model;
+	const char *driver;
 	int (*chip_init)(struct snd_ice1712 *);
 	void (*chip_exit)(struct snd_ice1712 *);
 	int (*build_controls)(struct snd_ice1712 *);