ARM: dts: ux500: Fix Gavini accelerometer mounting matrix

This was fixed wrong so fix it. Now verified by using
iio-sensor-proxy monitor-sensor test program.

Link: https://lore.kernel.org/r/20220611205138.491513-1-linus.walleij@linaro.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>