ARM: dts: imx6sx: Make UART compatible to 'imx6q-uart'

UART on i.MX6SX (like all other i.MX6 SoC variants) has the same
programming model as the 'imx6q-uart' type, so add it to the compatible
UART string.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6sx.dtsi

@@ -297,7 +297,8 @@ ecspi4: ecspi@02014000 {
 				};
 
 				uart1: serial@02020000 {
-					compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+					compatible = "fsl,imx6sx-uart",
+						     "fsl,imx6q-uart", "fsl,imx21-uart";
 					reg = <0x02020000 0x4000>;
 					interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
 					clocks = <&clks IMX6SX_CLK_UART_IPG>,
@@ -1053,7 +1054,8 @@ qspi2: qspi@021e4000 {
 			};
 
 			uart2: serial@021e8000 {
-				compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+				compatible = "fsl,imx6sx-uart",
+					     "fsl,imx6q-uart", "fsl,imx21-uart";
 				reg = <0x021e8000 0x4000>;
 				interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_UART_IPG>,
@@ -1065,7 +1067,8 @@ uart2: serial@021e8000 {
 			};
 
 			uart3: serial@021ec000 {
-				compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+				compatible = "fsl,imx6sx-uart",
+					     "fsl,imx6q-uart", "fsl,imx21-uart";
 				reg = <0x021ec000 0x4000>;
 				interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_UART_IPG>,
@@ -1077,7 +1080,8 @@ uart3: serial@021ec000 {
 			};
 
 			uart4: serial@021f0000 {
-				compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+				compatible = "fsl,imx6sx-uart",
+					     "fsl,imx6q-uart", "fsl,imx21-uart";
 				reg = <0x021f0000 0x4000>;
 				interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_UART_IPG>,
@@ -1089,7 +1093,8 @@ uart4: serial@021f0000 {
 			};
 
 			uart5: serial@021f4000 {
-				compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+				compatible = "fsl,imx6sx-uart",
+					     "fsl,imx6q-uart", "fsl,imx21-uart";
 				reg = <0x021f4000 0x4000>;
 				interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_UART_IPG>,
@@ -1229,7 +1234,8 @@ ecspi5: ecspi@0228c000 {
 			};
 
 			uart6: serial@022a0000 {
-				compatible = "fsl,imx6sx-uart", "fsl,imx21-uart";
+				compatible = "fsl,imx6sx-uart",
+					     "fsl,imx6q-uart", "fsl,imx21-uart";
 				reg = <0x022a0000 0x4000>;
 				interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks IMX6SX_CLK_UART_IPG>,