Fix init2() driver_ops to get the correct global driver context

Need to provide the private driver context, not the wpa_supplicant
global context, in init2() call.

wpa_supplicant/driver_i.h

@@ -22,7 +22,8 @@ static inline void * wpa_drv_init(struct wpa_supplicant *wpa_s,
 				  const char *ifname)
 {
 	if (wpa_s->driver->init2)
-		return wpa_s->driver->init2(wpa_s, ifname, wpa_s->global);
+		return wpa_s->driver->init2(wpa_s, ifname,
+					    wpa_s->global_drv_priv);
 	if (wpa_s->driver->init) {
 		return wpa_s->driver->init(wpa_s, ifname);
 	}

wpa_supplicant/wpa_supplicant.c

@@ -1704,6 +1704,7 @@ static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
 	if (name == NULL) {
 		/* default to first driver in the list */
 		wpa_s->driver = wpa_drivers[0];
+		wpa_s->global_drv_priv = wpa_s->global->drv_priv[0];
 		return 0;
 	}
 
@@ -1717,6 +1718,7 @@ static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
 		    os_strncmp(name, wpa_drivers[i]->name, len) ==
 		    0) {
 			wpa_s->driver = wpa_drivers[i];
+			wpa_s->global_drv_priv = wpa_s->global->drv_priv[i];
 			return 0;
 		}
 	}

wpa_supplicant/wpa_supplicant_i.h

@@ -333,6 +333,7 @@ struct wpa_supplicant {
 	int mgmt_group_cipher;
 
 	void *drv_priv; /* private data used by driver_ops */
+	void *global_drv_priv;
 
 	struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
 					  * NULL = not yet initialized (start