cfg80211: process regulatory DFS region for countries

The wireless-regdb now has support for mapping a country to
one DFS region. CRDA sends this to us now so process it
so we can provide that hint to drivers. This will later be
used by code for processing DFS in a way that meets the
criteria for the DFS region the country belongs to.

Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/regulatory.h b/include/net/regulatory.h
index eb7d3c2..7399c93 100644
--- a/include/net/regulatory.h
+++ b/include/net/regulatory.h
@@ -93,6 +93,7 @@
 struct ieee80211_regdomain {
 	u32 n_reg_rules;
 	char alpha2[2];
+	u8 dfs_region;
 	struct ieee80211_reg_rule reg_rules[];
 };