ASoC: rt5682: fix a little pop while playback

ASoC: rt5682: fix a little pop while playback

[ Upstream commit 4b19e4a77cc6baa0f840e8bae62ab974667f6207 ]

A little pop can be heard obviously from HP while playing a silent.
This patch fixes it by using two functions:
1. Enable HP 1bit output mode.
2. Change the charge pump switch size during playback on and off.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20211014094054.811-1-derek.fang@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>