[PATCH] ramips: add support for Dragonglass DGX25 (AX1800)

[Ivan Lee]

Hi Rosen,

Thanks for the review. v2 is out and drops the redundant &pcie0 node:
the MT7915D is a DBDC chip that sits on pcie1 only, with both 2.4 GHz
and 5 GHz radios exposed by the single mt7915e instance. The second
endpoint on pcie0 was wrong and has been removed.

Could you please take another look and let me know if anything else
needs to change?

Thanks,
Ivan Lee