ARM: dts: imx6sll: add PXP module

While the EPDC is optional, both consumer and industrial editions
have the PXP module, so adding it to the corresponding .dtsi
Information taken from freescale kernel, compared with the
reference manual and tested by a separate program.

Since it does not depend on external wiring, the
status = "disabled" is left out here.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6sll.dtsi

@@ -632,6 +632,15 @@ sdma: dma-controller@20ec000 {
 				fsl,sdma-ram-script-name = "imx/sdma/sdma-imx6q.bin";
 			};
 
+			pxp: pxp@20f0000 {
+				compatible = "fsl,imx6sll-pxp", "fsl,imx6ull-pxp";
+				reg = <0x20f0000 0x4000>;
+				interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+					<GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks IMX6SLL_CLK_PXP>;
+				clock-names = "axi";
+			};
+
 			lcdif: lcd-controller@20f8000 {
 				compatible = "fsl,imx6sll-lcdif", "fsl,imx28-lcdif";
 				reg = <0x020f8000 0x4000>;