ASoC: rt5650: fix the wrong result of key button

[ Upstream commit f88dfbf3

 ]

The RT5650 should enable a power setting for button detection to avoid the wrong result.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20231013094525.715518-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>