Fix driver_bsd.c build

On NetBSD 5.0.1, driver_bsd.c build fails with message below.

../src/drivers/driver_bsd.c: In function 'wpa_driver_bsd_associate':
../src/drivers/driver_bsd.c:1170: warning: implicit declaration of function 'wpa_driver_bsd_set_auth_alg'
../src/drivers/driver_bsd.c: At top level:
../src/drivers/driver_bsd.c:1204: error: static declaration of 'wpa_driver_bsd_set_auth_alg' follows non-static declaration
../src/drivers/driver_bsd.c:1170: error: previous implicit declaration of 'wpa_driver_bsd_set_auth_alg' was here
gmake: *** [../src/drivers/driver_bsd.o] Error 1

This patch solves this issue.

src/drivers/driver_bsd.c

@@ -1146,6 +1146,23 @@ wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
 	return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
 }
 
+static int
+wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
+{
+	struct wpa_driver_bsd_data *drv = priv;
+	int authmode;
+
+	if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
+	    (auth_alg & AUTH_ALG_SHARED_KEY))
+		authmode = IEEE80211_AUTH_AUTO;
+	else if (auth_alg & AUTH_ALG_SHARED_KEY)
+		authmode = IEEE80211_AUTH_SHARED;
+	else
+		authmode = IEEE80211_AUTH_OPEN;
+
+	return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
+}
+
 static int
 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
 {
@@ -1199,23 +1216,6 @@ wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
 	return ret;
 }
 
-static int
-wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
-{
-	struct wpa_driver_bsd_data *drv = priv;
-	int authmode;
-
-	if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
-	    (auth_alg & AUTH_ALG_SHARED_KEY))
-		authmode = IEEE80211_AUTH_AUTO;
-	else if (auth_alg & AUTH_ALG_SHARED_KEY)
-		authmode = IEEE80211_AUTH_SHARED;
-	else
-		authmode = IEEE80211_AUTH_OPEN;
-
-	return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
-}
-
 static int
 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
 {