Fix typo for ODM prop files

_prop_files is missing a trailing _

Bug: 195034733
Test: manual - check that expected prop files are in the image
Change-Id: Ie042acc74fa56d5515cacd5f41ddc0f82d74f20c
diff --git a/core/sysprop.mk b/core/sysprop.mk
index be9b1f8..1d38f8c 100644
--- a/core/sysprop.mk
+++ b/core/sysprop.mk
@@ -430,7 +430,7 @@
 $(eval $(call build-properties,\
     odm,\
     $(INSTALLED_ODM_BUILD_PROP_TARGET),\
-    $(_prop_files),\
+    $(_prop_files_),\
     $(_prop_vars_),\
     $(empty),\
     $(empty),\