The scenario says Waiqar gets one vp if they have 2 units (or more) adjacent to the building (marked in red on the card).

If a unit is in the city, does that count as adjacency?

So, if I have one unit just outside and one unit inside the city, does that qualify the Waiqar player for the vp?

I would say yes. That's how my friends and I interpret it when we play.

No, a tile is not adjacent to itself. Likewise, Banshee doesn't support itself.

1 for, 1 against.

Anyone else have thoughts, or read any ruling somewhere about it?

the building doesn't count, a hex is not adjacent to itself