ath: add a debug level for DFS

This can later be used by other drivers that implement
DFS support.

Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath.h

@@ -218,6 +218,7 @@ do {								\
  * @ATH_DBG_MCI: Message Coexistence Interface, a private protocol
  *	used exclusively for WLAN-BT coexistence starting from
  *	AR9462.
+ * @ATH_DBG_DFS: radar datection
  * @ATH_DBG_ANY: enable all debugging
  *
  * The debug level is used to control the amount and type of debugging output
@@ -244,6 +245,7 @@ enum ATH_DEBUG {
 	ATH_DBG_WMI		= 0x00004000,
 	ATH_DBG_BSTUCK		= 0x00008000,
 	ATH_DBG_MCI		= 0x00010000,
+	ATH_DBG_DFS		= 0x00020000,
 	ATH_DBG_ANY		= 0xffffffff
 };