ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name

Fix misspelled "ti,x-plate-ohms" property name of TI TSC2046
touchscreen controller.

Fixes: d09e6beafa23 ("ARM: dts: imx7d-sdb: Add support for touchscreen")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx7d-sdb.dts

@@ -131,7 +131,7 @@
 		ti,y-min = /bits/ 16 <0>;
 		ti,y-max = /bits/ 16 <0>;
 		ti,pressure-max = /bits/ 16 <0>;
-		ti,x-plat-ohms = /bits/ 16 <400>;
+		ti,x-plate-ohms = /bits/ 16 <400>;
 		wakeup-source;
 	};
 };