ARM: dts: sun8i: add DTS file for Banana Pi M2 Ultralogin register mail settings

Banana Pi SBCs design BPI-M2 Ultra / BPI-M2 Berry(A40i)
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ARM: dts: sun8i: add DTS file for Banana Pi M2 Ultra login register mail settings

https://patchwork.kernel.org/patch/9580473/