Add Exar UARTs XR17C152, XR17C154 and XR17C158. From Daniel Neri (daniel dot neri at sigicom dot se) via PR/5618.
Add Exar UARTs XR17C152, XR17C154 and XR17C158.
From Daniel Neri (daniel dot neri at sigicom dot se) via PR/5618.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars