ARM: dts: imx6ull: add UART8 support

In i.MX 6ULL UART8 is part of the AIPS-3 memory map instead of
AIPS-1. Clocks and interrupts remain the same.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ull.dtsi

@@ -43,6 +43,9 @@
 #include "imx6ull-pinfunc.h"
 #include "imx6ull-pinfunc-snvs.h"
 
+/* Delete UART8 in AIPS-1 (i.MX6UL specific) */
+/delete-node/ &uart8;
+
 / {
 	soc {
 		aips3: aips-bus@2200000 {
@@ -56,6 +59,17 @@ iomuxc_snvs: iomuxc-snvs@2290000 {
 				compatible = "fsl,imx6ull-iomuxc-snvs";
 				reg = <0x02290000 0x4000>;
 			};
+
+			uart8: serial@2288000 {
+				compatible = "fsl,imx6ul-uart",
+					     "fsl,imx6q-uart";
+				reg = <0x02288000 0x4000>;
+				interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks IMX6UL_CLK_UART8_IPG>,
+					 <&clks IMX6UL_CLK_UART8_SERIAL>;
+				clock-names = "ipg", "per";
+				status = "disabled";
+			};
 		};
 	};
 };