dragon: Add libbt-vendor in device.mk
am: 0c876f12e5

Change-Id: I5918e1d4cc581f5d6c33e1ce350a2162dc24c6ab
diff --git a/device.mk b/device.mk
index 8b259cd..1d2bf65 100644
--- a/device.mk
+++ b/device.mk
@@ -121,6 +121,7 @@
 
 # Bluetooth HAL
 PRODUCT_PACKAGES += \
+    libbt-vendor \
     android.hardware.bluetooth@1.0-impl
 
 # Copy dsp firmware to the vendor parition so it is available when hotwording