hostapd: Simplify interface initialization

Use hostapd_interface_init2() for all interfaces instead of the
previously used different paths for per-interface-config and
per-BSS-config cases. This moves the calls to hostapd_driver_init() and
hostapd_setup_interface() to happen after all configuration files have
been read.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/ap/hostapd.h

@@ -250,7 +250,6 @@ struct hostapd_iface {
 	char *config_fname;
 	struct hostapd_config *conf;
 	char phy[16]; /* Name of the PHY (radio) */
-	int init_done;
 
 	size_t num_bss;
 	struct hostapd_data **bss;