Move libnl headers to their own project

Change-Id: Id1f532a7ea4e583a1f51975cee682b968471dc16
diff --git a/hostapd/Android.mk b/hostapd/Android.mk
index 2dbd67d..4655cfd 100644
--- a/hostapd/Android.mk
+++ b/hostapd/Android.mk
@@ -34,7 +34,7 @@
 INCLUDES += external/openssl/include
 INCLUDES += frameworks/base/cmds/keystore
 ifdef CONFIG_DRIVER_NL80211
-INCLUDES += system/core/libnl_2/include
+INCLUDES += external/libnl-headers
 endif
 
 
diff --git a/wpa_supplicant/Android.mk b/wpa_supplicant/Android.mk
index a59652d..8ad3a28 100644
--- a/wpa_supplicant/Android.mk
+++ b/wpa_supplicant/Android.mk
@@ -69,7 +69,7 @@
 INCLUDES += external/openssl/include
 INCLUDES += frameworks/base/cmds/keystore
 ifdef CONFIG_DRIVER_NL80211
-INCLUDES += system/core/libnl_2/include
+INCLUDES += external/libnl-headers
 endif
 
 OBJS = config.c