I think - if it isn't already a Wiki, contact method, etc. - a channel for an OEM to offer OpenWrt on Day 0.
- What does OEM need to do if architecture/target doesn't exist
- What to do if already exists
- Why did the chip manufacturer give me this different SDK, how was it developed from OpenWrt, etc.
On the last point, recall it's a marketing point/term from the chip manufacturer also that it's "compatible". 