Add vendor_dlkm/etc/build.prop

Test: builds and manual inspect
Bug: 156020364
Change-Id: Ic7606bc3cd8770ec56ddc7bea86c88625c38f32d
diff --git a/core/sysprop.mk b/core/sysprop.mk
index 002e1b5..99c7ebd 100644
--- a/core/sysprop.mk
+++ b/core/sysprop.mk
@@ -392,6 +392,15 @@
     $(_prop_vars_),\
     $(empty)))
 
+# ----------------------------------------------------------------
+# vendor_dlkm/etc/build.prop
+#
+
+INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR_DLKM)/etc/build.prop
+$(eval $(call build-properties,\
+    vendor_dlkm,\
+    $(INSTALLED_VENDOR_DLKM_BUILD_PROP_TARGET)))
+
 # -----------------------------------------------------------------
 # system_ext/etc/build.prop
 #