arm64: dts: rockchip: add audio nodes to rk3566-roc-pc

This patch adds simple audio card nodes
Enabled i2s0_8ch as it is needed for hdmi audio

Added i2s1_8ch as it is needed for 3.5mm audio jack and limit it to a
single-channel, as i2s1m0_sdo{1,2,3} and i2s1m0_sdi{1,2,3} are used
by pcie.

Signed-off-by: Furkan Kardame <f.kardame@manjaro.org>
Link: https://lore.kernel.org/r/20230109203232.45192-1-f.kardame@manjaro.org


[dropped the duplicate i2s@fe410000 node]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>