arm64: dts: rockchip: fix num-channels property of wolfvision pf5 mic

The Rockchip RK3568 PDM block always considers stereo inputs. Therefore,
the number of channels must be always an even number, even if a single
mono microphone is attached.

Fixes: 0be29f7 ("arm64: dts: rockchip: add wolfvision pf5 mainboard")
Signed-off-by: Michael Riesch <[email protected]>
Link: https://lore.kernel.org/r/20241218-b4-wolfvision-pf5-update-v1-1-1d1959858708@wolfvision.net
Signed-off-by: Heiko Stuebner <[email protected]>

Author: mriesch-wv

arch/arm64/boot/dts/rockchip/rk3568-wolfvision-pf5.dts

@@ -53,7 +53,7 @@
 
 	pdm_codec: pdm-codec {
 		compatible = "dmic-codec";
-		num-channels = <1>;
+		num-channels = <2>;
 		#sound-dai-cells = <0>;
 	};