Android: Add dfs.c into build

This fixes Android build after commit
e76da5052980f301fe61f2fc0e1e7a5789716061 that added the new dfs.c file.

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

hostapd/Android.mk

@@ -820,6 +820,7 @@ OBJS += src/ap/wmm.c
 OBJS += src/ap/ap_list.c
 OBJS += src/ap/ieee802_11.c
 OBJS += src/ap/hw_features.c
+OBJS += src/ap/dfs.c
 L_CFLAGS += -DNEED_AP_MLME
 endif
 ifdef CONFIG_IEEE80211N

wpa_supplicant/Android.mk

@@ -771,6 +771,7 @@ OBJS += src/ap/wmm.c
 OBJS += src/ap/ap_list.c
 OBJS += src/ap/ieee802_11.c
 OBJS += src/ap/hw_features.c
+OBJS += src/ap/dfs.c
 L_CFLAGS += -DNEED_AP_MLME
 endif
 ifdef CONFIG_WPS