ARM: dts: imx28: Add simple-card support

Add simple-card support to SAIF0 and SAIF1.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx28.dtsi

@@ -1071,6 +1071,7 @@ clks: clkctrl@80040000 {
 			};
 
 			saif0: saif@80042000 {
+				#sound-dai-cells = <0>;
 				compatible = "fsl,imx28-saif";
 				reg = <0x80042000 0x2000>;
 				interrupts = <59>;
@@ -1087,6 +1088,7 @@ power: power@80044000 {
 			};
 
 			saif1: saif@80046000 {
+				#sound-dai-cells = <0>;
 				compatible = "fsl,imx28-saif";
 				reg = <0x80046000 0x2000>;
 				interrupts = <58>;