ARM: dts: imx6: RDU2: correct touchscreen axis inversion

The RMI4 touchscreen driver applied inversion and axis swap in the
wrong order, violating the DT binding for those properties. This is
fixed now, so correct the RDU2 DT to apply the inversion to the
correct axis.
Signed-off-by: NLucas Stach <l.stach@pengutronix.de>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi

@@ -569,14 +569,14 @@
 
 		rmi4-f11@11 {
 			reg = <0x11>;
-			touchscreen-inverted-y;
+			touchscreen-inverted-x;
 			touchscreen-swapped-x-y;
 			syna,sensor-type = <1>;
 		};
 
 		rmi4-f12@12 {
 			reg = <0x12>;
-			touchscreen-inverted-y;
+			touchscreen-inverted-x;
 			touchscreen-swapped-x-y;
 			syna,sensor-type = <1>;
 		};