Fix CONFIG_AP + CONFIG_INTERWORKING build

Need to include gas_serv.o in the build to get all the needed symbols.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/Makefile

@@ -728,6 +728,9 @@ CFLAGS += -DEAP_SERVER_WSC
 OBJS += ../src/ap/wps_hostapd.o
 OBJS += ../src/eap_server/eap_server_wsc.o
 endif
+ifdef CONFIG_INTERWORKING
+OBJS += ../src/ap/gas_serv.o
+endif
 endif
 
 ifdef NEED_RSN_AUTHENTICATOR