Include misc_writer.

Bug: 113028175
Bug: 134157796
Bug: 134430124
Test: Build and flash taimen with the matching bootloader change.
      Check serial log regarding the start of vendor.darkboot service.
      Also read the value via `dd bs=1 skip=2048 if=/dev/block/sda5
      count=32 | xxd` to confirm the change.
Test: Trigger a factory reset via Settings. Check the value in /misc
      after the reset.
Change-Id: I87c248e25450f520bdc6f1cab3d7f240e54394d0
diff --git a/device.mk b/device.mk
index 042fc6e..2edb7b9 100755
--- a/device.mk
+++ b/device.mk
@@ -155,6 +155,10 @@
     bootctl \
     update_engine_client
 
+# Write flags to the vendor space in /misc partition.
+PRODUCT_PACKAGES += \
+    misc_writer
+
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.hardware.camera.flash-autofocus.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.camera.flash-autofocus.xml \
     frameworks/native/data/etc/android.hardware.camera.front.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.camera.front.xml \