ASoC: rt5645: Increase the delay time to imporve the HP pop noise

Unmuting headphone has pop noise in particular hardware design. So we extend
the delay time in headphone unmuting sequence to avoid pop.

Signed-off-by: John Lin <john.lin@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 672fafd..fa8b5df 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -1519,7 +1519,7 @@
 				regmap_write(rt5645->regmap, RT5645_PR_BASE +
 					RT5645_MAMP_INT_REG2, 0xfc00);
 				snd_soc_write(codec, RT5645_DEPOP_M2, 0x1140);
-				msleep(40);
+				msleep(70);
 				rt5645->hp_on = true;
 			} else {
 				/* depop parameters */