772a896ba2
Please note - this doesn't in any way constitute a full DFS implementation, it merely adds the relevant capability bits and radar detection threshold register access. The particulars: * Add new capability bits outlining what the DFS capabilities are of the various chipsets. * Add HAL methods to set and get the radar related register values. * Add AR5212 and AR5416+ DFS radar related register value routines. * Add a missing HAL phy error code that's related to radar event processing. * Add HAL_PHYERR_PARAM, a data type that encapsulates the radar register values. The AR5212 routines are just for completeness. The AR5416 routines are a super-set of those; I may later on do a drive-by pass to tidy up duplicate code. Obtained from: Linux, Atheros