Staging: w35und: move supported band initialization out of wb35_probe()

This patch moves the static struct ieee80211_supported_band initialization out
of w35_probe() because it's really global read-only configuration data.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>