ARM: dts: lpc32xx: add clock properties to spi nodes

The change adds clock properties to spi peripheral devices,
clock ids are taken from dt-bindings/clock/lpc32xx-clock.h
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>

arch/arm/boot/dts/lpc32xx.dtsi

@@ -173,6 +173,7 @@ ssp0: ssp@20084000 {
 			spi1: spi@20088000 {
 				compatible = "nxp,lpc3220-spi";
 				reg = <0x20088000 0x1000>;
+				clocks = <&clk LPC32XX_CLK_SPI1>;
 			};
 
 			ssp1: ssp@2008c000 {
@@ -186,6 +187,7 @@ ssp1: ssp@2008c000 {
 			spi2: spi@20090000 {
 				compatible = "nxp,lpc3220-spi";
 				reg = <0x20090000 0x1000>;
+				clocks = <&clk LPC32XX_CLK_SPI2>;
 			};
 
 			i2s0: i2s@20094000 {