ath: export alpha2 helper

This will be helpful for drivers that can acquire
alpha2 regulatory codes.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/regd.c

@@ -449,7 +449,7 @@ static void ath_reg_apply_world_flags(struct wiphy *wiphy,
 	}
 }
 
-static u16 ath_regd_find_country_by_name(char *alpha2)
+u16 ath_regd_find_country_by_name(char *alpha2)
 {
 	unsigned int i;
 
@@ -460,6 +460,7 @@ static u16 ath_regd_find_country_by_name(char *alpha2)
 
 	return -1;
 }
+EXPORT_SYMBOL(ath_regd_find_country_by_name);
 
 static int __ath_reg_dyn_country(struct wiphy *wiphy,
 				 struct ath_regulatory *reg,

drivers/net/wireless/ath/regd.h

@@ -251,6 +251,7 @@ enum CountryCode {
 
 bool ath_is_world_regd(struct ath_regulatory *reg);
 bool ath_is_49ghz_allowed(u16 redomain);
+u16 ath_regd_find_country_by_name(char *alpha2);
 int ath_regd_init(struct ath_regulatory *reg, struct wiphy *wiphy,
 		  void (*reg_notifier)(struct wiphy *wiphy,
 				       struct regulatory_request *request));