Add support for D-Link M30 (AQUILA PRO AI AX3000 Smart Mesh Router)

I didn't try sysugrade from the original layout to the new one. I started from scratch using the recovery first and then did a sysupgrade.

Okay, so without recovery first and then sysupgrade, it's not possible?
That is a bummer then.....
I have to redo everything again, even after flashing backup file.
But thanks for the mod and your support to this.