ASoC: rt5682: Enable Vref2 under using PLL2

Enable Vref2 under long term using PLL2 to avoid clock unstable.

Signed-off-by: derek.fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/1594721600-29994-1-git-send-email-derek.fang@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed