Edgeble NCM6A-IO is common compatible IO board for both NCM6A
and NCM6B. Add a common io DTSI for it to include them in both
NCM6A and NCM6B DTS files.
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20231125190522.87607-3-jagan@edgeble.aiSigned-off-by: Heiko Stuebner <heiko@sntech.de>