arm64: dts: imx8mm: Fix typo in license text for Engicam boards

Fix the Amarula Solutions typo mistake in license text for Engicam
i.MX8M boards add in below commits.

commit <60ac3526> ("arm64: dts: imx8mm: Add Engicam i.Core MX8M
Mini SoM")
commit <aec8ad34> ("arm64: dts: imx8mp: Add Engicam i.Core MX8M
Plus EDIMM2.2 Starter Kit")
commit <eefe06b2> ("arm64: dts: imx8mp: Add Engicam i.Core MX8M
Plus SoM")

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>