Add DeviceParts with most of Doze and Gestures features

Taken from oneplus6 and edit for our zenfone 6
diff --git a/device.mk b/device.mk
index 998b3de..95a8964 100755
--- a/device.mk
+++ b/device.mk
@@ -72,6 +72,10 @@
     animation.txt \
     font_charger.png
 
+# DeviceParts
+PRODUCT_PACKAGES += \
+    DeviceParts
+
 # Display
 PRODUCT_PACKAGES += \
     libion \