Zenfone6: Import bootctrl and gpt-utils

* From CAF LA.UM.7.1.r1-14100-sm8150.0.xml, modified to build with VNDK current
diff --git a/device.mk b/device.mk
index 004fdb0..0426a4a 100755
--- a/device.mk
+++ b/device.mk
@@ -48,6 +48,16 @@
 PRODUCT_PACKAGES += \
     audio.a2dp.default
 
+# Boot control
+PRODUCT_PACKAGES_DEBUG += \
+    bootctl
+
+PRODUCT_STATIC_BOOT_CONTROL_HAL := \
+    bootctrl.sm8150 \
+    libcutils \
+    libgptutils \
+    libz
+
 # Camera
 PRODUCT_PACKAGES += \
     SnapdragonCamera2