arm64: dts: rockchip: Fix typo in lisense text for PX30.Core

Fix the Amarula Solutions typo mistake in lisense text added
in Engicam PX30.Core SoM dtsi.

Fixes: d92a7c33

 ("arm64: dts: rockchip: Add Engicam PX30.Core SOM")
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20220822103524.266731-1-jagan@amarulasolutions.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>