proprietary: add wlbtd

Change-Id: I92d4a1723fcab3d304f6ed63f83b8e10ae38ab61
diff --git a/proprietary-files-vendor.txt b/proprietary-files-vendor.txt
index 9e15423..20a63b2 100644
--- a/proprietary-files-vendor.txt
+++ b/proprietary-files-vendor.txt
@@ -405,6 +405,7 @@
 
 # WIFI
 vendor/bin/hw/macloader
+vendor/bin/wlbtd
 vendor/etc/init/wifi_slsi.rc
 vendor/etc/init/wifi.rc
 vendor/etc/wifi/hydra_config.sdb