Fix overlay for PA

Change-Id: Ic2f610f0ad049116727a27736807da8a6ecf71a7
diff --git a/device.mk b/device.mk
index 0f82f4e..3dc842e 100644
--- a/device.mk
+++ b/device.mk
@@ -17,5 +17,8 @@
 ## (2) Also get non-open-source specific aspects if available
 $(call inherit-product-if-exists, vendor/htc/dlx/dlx-vendor.mk)
 
+## overlays
+DEVICE_PACKAGE_OVERLAYS += device/htc/dlx/overlay
+
 # Inherit from msm8960-common
 $(call inherit-product, device/htc/msm8960-common/msm8960.mk)