ARM: dts: ux500: Fix orientation of Janice accelerometer

This fixes up the axis on the Janice accelerometer to give
the right orientation according to tests.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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

@@ -583,10 +583,9 @@ i2c-gate {
 					accelerometer@08 {
 						compatible = "bosch,bma222";
 						reg = <0x08>;
-						/* FIXME: no idea about this */
-						mount-matrix = "1", "0", "0",
-							       "0", "1", "0",
-							       "0", "0", "1";
+						mount-matrix = "0", "1", "0",
+							       "-1", "0", "0",
+							       "0", "0", "-1";
 						vddio-supply = <&ab8500_ldo_aux2_reg>; // 1.8V
 						vdd-supply = <&ab8500_ldo_aux1_reg>; // 3V
 					};