LF-4159-7 arm: dts: imx6ull: add dummy clock for epdc_ahb

add dummy clock for epdc_ahb as it shares epdc driver with imx8ulp

Signed-off-by: Robby Cai <robby.cai@nxp.com>
Reviewed-by: G.n. Zhou <guoniu.zhou@nxp.com>

arch/arm/boot/dts/imx6ull.dtsi

@@ -130,8 +130,9 @@
 				interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
 				reg = <0x228c000 0x4000>;
 				clocks = <&clks IMX6ULL_CLK_EPDC_ACLK>,
-					 <&clks IMX6ULL_CLK_EPDC_PIX>;
-				clock-names = "epdc_axi", "epdc_pix";
+					 <&clks IMX6ULL_CLK_EPDC_PIX>,
+					 <&clks IMX6UL_CLK_DUMMY>;
+				clock-names = "epdc_axi", "epdc_pix", "epdc_ahb";
 				/* Need to fix epdc-ram */
 				/* epdc-ram = <&gpr 0x4 30>; */
 				status = "disabled";