Fiddle with the AR5416 1.0 chainmask setup.
Fiddle with the AR5416 1.0 chainmask setup.

Apparently all three RX chains need to be enabled before initial calibration
is done, even if only two are configured.

Reorder the alt chain swap bit to match what the Atheros HAL is doing.

Obtained From:	ath9k, Atheros

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