[802.11] Set channels early on to avoid tuning to an undefined channel

Some cards (such as ath5k) always need to tune to a particular channel
when they are reset; the reset may happen upon open(), which is before
the channels array would be set up (in prepare_probe()). Avoid tuning
the card to an inconsistent state by copying the hardware
supported-channels array to the 802.11 device's allowable-channels
array even before channels are "properly" set up.

Signed-off-by: Michael Brown <mcb30@etherboot.org>

src/net/80211/net80211.c

 	memcpy ( dev->hw, hw, sizeof ( *hw ) );
 	memcpy ( dev->netdev->ll_addr, hw->hwaddr, ETH_ALEN );
 
+	/* Set some sensible channel defaults for driver's open() function */
+	memcpy ( dev->channels, dev->hw->channels,
+		 NET80211_MAX_CHANNELS * sizeof ( dev->channels[0] ) );
+	dev->channel = 0;
+
 	list_add_tail ( &dev->list, &net80211_devices );
 	return register_netdev ( dev->netdev );
 }