[ALSA] Add even more 'const' to everything related to TLV

Mark TLV data as 'const'
Signed-of-by: Philipp Matthias Hahn <pmhahn@pmhahn.de>

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c
index 3d9d6c5..8805110 100644
--- a/sound/i2c/other/ak4xxx-adda.c
+++ b/sound/i2c/other/ak4xxx-adda.c
@@ -162,17 +162,17 @@
 /*
  * dB tables
  */
-static DECLARE_TLV_DB_SCALE(db_scale_vol_datt, -6350, 50, 1);
-static DECLARE_TLV_DB_SCALE(db_scale_8bit, -12750, 50, 1);
-static DECLARE_TLV_DB_SCALE(db_scale_7bit, -6350, 50, 1);
-static DECLARE_TLV_DB_LINEAR(db_scale_linear, TLV_DB_GAIN_MUTE, 0);
+static const DECLARE_TLV_DB_SCALE(db_scale_vol_datt, -6350, 50, 1);
+static const DECLARE_TLV_DB_SCALE(db_scale_8bit, -12750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(db_scale_7bit, -6350, 50, 1);
+static const DECLARE_TLV_DB_LINEAR(db_scale_linear, TLV_DB_GAIN_MUTE, 0);
 
 /*
  * initialize all the ak4xxx chips
  */
 void snd_akm4xxx_init(struct snd_akm4xxx *ak)
 {
-	static unsigned char inits_ak4524[] = {
+	static const unsigned char inits_ak4524[] = {
 		0x00, 0x07, /* 0: all power up */
 		0x01, 0x00, /* 1: ADC/DAC reset */
 		0x02, 0x60, /* 2: 24bit I2S */