ASoC: rt1308: simplify the EFUSE read function

The rt1308_efuse function contains many redundant settings.
We remove the redundant settings and the function still works.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20190719063235.18757-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1308.c

@@ -808,33 +808,11 @@ static void rt1308_efuse(struct rt1308_priv *rt1308)
 {
 	regmap_write(rt1308->regmap, RT1308_RESET, 0);
 
-	regmap_write(rt1308->regmap, RT1308_POWER, 0xff371600);
-	regmap_write(rt1308->regmap, RT1308_CLK_1, 0x52100000);
-	regmap_write(rt1308->regmap, RT1308_I2C_I2S_SDW_SET, 0x01014005);
-	regmap_write(rt1308->regmap, RT1308_CLASS_D_SET_2, 0x227f5501);
-	regmap_write(rt1308->regmap, RT1308_PADS_1, 0x50150505);
-	regmap_write(rt1308->regmap, RT1308_VREF, 0x18100000);
-	regmap_write(rt1308->regmap, RT1308_IV_SENSE, 0x87010000);
-	regmap_write(rt1308->regmap, RT1308_DUMMY_REG, 0x00000200);
-	regmap_write(rt1308->regmap, RT1308_SIL_DET, 0x61c30000);
-	regmap_write(rt1308->regmap, RT1308_CLK_DET, 0x03700000);
-	regmap_write(rt1308->regmap, RT1308_SINE_TONE_GEN_1, 0x50022f00);
 	regmap_write(rt1308->regmap, RT1308_POWER_STATUS, 0x01800000);
-	regmap_write(rt1308->regmap, RT1308_DC_CAL_2, 0x00ffff00);
-	regmap_write(rt1308->regmap, RT1308_CLASS_D_SET_2, 0x607e5501);
-
-	regmap_write(rt1308->regmap, RT1308_CLK_2, 0x0060e000);
-	regmap_write(rt1308->regmap, RT1308_EFUSE_1, 0x04fe0f00);
 	msleep(100);
 	regmap_write(rt1308->regmap, RT1308_EFUSE_1, 0x44fe0f00);
 	msleep(20);
 	regmap_write(rt1308->regmap, RT1308_PVDD_OFFSET_CTL, 0x10000000);
-
-	regmap_write(rt1308->regmap, RT1308_POWER_STATUS, 0x00800000);
-	regmap_write(rt1308->regmap, RT1308_POWER, 0x0);
-	regmap_write(rt1308->regmap, RT1308_CLK_1, 0x52000000);
-	regmap_write(rt1308->regmap, RT1308_CLASS_D_SET_2, 0x227f5501);
-	regmap_write(rt1308->regmap, RT1308_SINE_TONE_GEN_1, 0x10022f00);
 }
 
 static int rt1308_i2c_probe(struct i2c_client *i2c,