ARM: dts: ux500-skomer: Correct accel mounting matrix

This corrects the mounting matrix for the BMA254
accelerometer to what makes PostmarketOS actually
orient the screen the right way on this device.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200719201603.3610389-1-linus.walleij@linaro.org

arch/arm/boot/dts/ste-ux500-samsung-skomer.dts

@@ -349,8 +349,8 @@ accel@18 {
 				interrupt-parent = <&gpio7>;
 				interrupts = <0 IRQ_TYPE_EDGE_RISING>;
 
-				mount-matrix = "0", "1", "0",
-					       "-1", "0", "0",
+				mount-matrix = "0", "-1", "0",
+					      "1", "0", "0",
 					       "0", "0", "1";
 				vdd-supply = <&ab8500_ldo_aux1_reg>;
 				vddio-supply = <&ab8500_ldo_aux8_reg>;