arm64: dts: rockchip: Fix compatible for Radxa CM3

The compatible string "radxa,radxa-cm3" referring the product name
as "Radxa Radxa CM3" but the actual product name is "Radxa CM3".

Fix the compatible strings.

Fixes: 24a28d3e ("dt-bindings: arm: rockchip: Add Radxa Compute Module 3")
Fixes: 7469ab52 ("arm64: dts: rockchip: Add rk3566 based Radxa Compute Module 3")
Fixes: 096ebfb7 ("arm64: dts: rockchip: Add Radxa Compute Module 3 IO board")
Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230123071654.73139-1-jagan@amarulasolutions.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>