As a temporary work-around (read: until there's a nice API for exposing and controlling this form of antenna diversity) - print out the AR9285 antenna diversity configuration at attach time.
As a temporary work-around (read: until there's a nice API for exposing
and controlling this form of antenna diversity) - print out the AR9285
antenna diversity configuration at attach time.

This will help track down and diagose if/when people have connectivity
issues on cards (eg if they connect a single antenna to LNA1, yet the
card has RX configured to only occur on LNA2.)

Tested:

* AR9285 w/ antenna diversity enabled in EEPROM;
* AR9285 w/ antenna diversity disabled in EEPROM; mapping only to a
  single antenna (LNA1.)

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