- fix FIFO overruns on PCI-E chipsets by setting the DMA size

- fix FIFO overruns on PCI-E chipsets by setting the DMA size
RX/TX configuration registers to 128 instead of 512 bytes.
- add a few more MAC/RF id strings for the dmesg.
- check for PCI-E instead of single chip variants in a few places.

ok deraadt@