point to new repo hooks for mainline uploads

Bug: 157501573
Test: repo upload .
Change-Id: I633798a92ac07920ab7bf633681099af3aac6d8e
Merged-In: Ieddc248caa89a8a9166298b53fee59d4b445c2e0
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index e63185d..ae920c0 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,2 +1,2 @@
 [Hook Scripts]
-mainline_hook = tools/mainline_hook.sh ${PREUPLOAD_COMMIT} "."
+mainline_hook = ${REPO_ROOT}/frameworks/av/tools/mainline_hook_partial.sh ${REPO_ROOT} ${PREUPLOAD_FILES}