arm64: dts: mediatek: mt8390-genio-common: Add delay codec for DMIC

arm64: dts: mediatek: mt8390-genio-common: Add delay codec for DMIC

The signal from the dual digital microphones connected to the DMIC_BE
takes 30ms to settle after being enabled. Add a dmic-codec with
corresponding wakeup-delay-ms to prevent an initial "pop" sound when
recording with the microphones.

Co-developed-by: Zoran Zhan <zoran.zhan@mediatek.com>
Signed-off-by: Zoran Zhan <zoran.zhan@mediatek.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250225-genio700-dmic-v2-8-3076f5b50ef7@collabora.com
[Angelo: Resolved merge conflicts]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>