Added initial board support for the pconxs
Sanitized USDHC initialization order
Reset the WiBear11n chip in the boot loader
Remove unused SDHC2 configuration, and integrate WiBear11n initialization with the existing MMC initialization.

Configuring all pins used by the WiBear11n modules helps to stay sane.
Use the correct primary ethernet device 'FEC'
Reverse MAC address bytes on read-out. Are they programmed in the wrong order to begin with?
Expect a zImage