Fix hostapd build with CONFIG_IEEE80211N but without NEED_AP_MLME

hostapd/Makefile

@@ -694,11 +694,11 @@ OBJS += ../src/ap/wmm.o
 OBJS += ../src/ap/ap_list.o
 OBJS += ../src/ap/ieee802_11.o
 OBJS += ../src/ap/hw_features.o
+CFLAGS += -DNEED_AP_MLME
+endif
 ifdef CONFIG_IEEE80211N
 OBJS += ../src/ap/ieee802_11_ht.o
 endif
-CFLAGS += -DNEED_AP_MLME
-endif
 
 ifdef CONFIG_NO_STDOUT_DEBUG
 CFLAGS += -DCONFIG_NO_STDOUT_DEBUG