boards: stm32f429i_disc1: inverted touch controller axes

This inverts x and y axes as reported by stmpe811 driver for stm32f429i.

Signed-off-by: Dominik Lau <dlau@internships.antmicro.com>
Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>

boards/st/stm32f429i_disc1/stm32f429i_disc1.dts

@@ -61,8 +61,6 @@
 	lvgl_pointer {
 		compatible = "zephyr,lvgl-pointer-input";
 		input = <&stmpe811>;
-		invert-x;
-		invert-y;
 	};
 
 	mipi_dbi {
@@ -177,6 +175,8 @@
 		touch-detect-delay-us = <5000>;
 		touch-average-control = <8>;
 		tracking-index = <127>;
+		inverted-x;
+		inverted-y;
 	};
 };