manta: wlan: Add wpa_supplicant overlay file support

Bug: 8725307

Change-Id: I904e25d493aa34c32c38e953f08a306b7a5764ea
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/init.manta.rc b/init.manta.rc
index a7661e5..82791ba 100644
--- a/init.manta.rc
+++ b/init.manta.rc
@@ -125,8 +125,10 @@
 
 service p2p_supplicant /system/bin/wpa_supplicant \
     -iwlan0 -Dnl80211 -c/data/misc/wifi/wpa_supplicant.conf \
+    -I/system/etc/wifi/wpa_supplicant_overlay.conf \
     -puse_multi_chan_concurrent=1 -N -ip2p0 -Dnl80211 \
     -c/data/misc/wifi/p2p_supplicant.conf \
+    -I/system/etc/wifi/wpa_supplicant_overlay.conf \
     -puse_p2p_group_interface=1use_multi_chan_concurrent=1 -e/data/misc/wifi/entropy.bin
     #   we will start as root and wpa_supplicant will switch to user wifi
     #   after setting up the capabilities required for WEXT
@@ -138,7 +140,9 @@
     oneshot
 
 service wpa_supplicant /system/bin/wpa_supplicant \
-    -iwlan0 -Dnl80211 -c/data/misc/wifi/wpa_supplicant.conf -e/data/misc/wifi/entropy.bin
+    -iwlan0 -Dnl80211 -c/data/misc/wifi/wpa_supplicant.conf \
+    -I/system/etc/wifi/wpa_supplicant_overlay.conf \
+    -e/data/misc/wifi/entropy.bin
     #   we will start as root and wpa_supplicant will switch to user wifi
     #   after setting up the capabilities required for WEXT
     #   user wifi