arm64: dts: rockchip: Add sound-dai-cells for RK3368

[ Upstream commit 8d7ec44a ]

Add the missing #sound-dai-cells for RK3368's I2S and S/PDIF controllers.

Fixes: f7d89dfe ("arm64: dts: rockchip: add i2s nodes support for RK3368 SoCs")
Fixes: 0328d68e

 ("arm64: dts: rockchip: add rk3368 spdif node")
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20240623090116.670607-4-knaerzche@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>