Move permissions allowlist for Tethering

The allowlist will now be in the apex instead.

Test: boots && check permissions.xml is bundled
Bug: 190375768

Change-Id: Ia7434cba54d2b51479e52323f22c7f454499991d
diff --git a/Tethering/apex/permissions/OWNERS b/Tethering/apex/permissions/OWNERS
new file mode 100644
index 0000000..8b7e2e5
--- /dev/null
+++ b/Tethering/apex/permissions/OWNERS
@@ -0,0 +1,2 @@
+per-file *.xml,OWNERS = set noparent
+per-file *.xml,OWNERS = file:platform/frameworks/base:/data/etc/OWNERS