Allow getattr on rootfs:lnk_file for all domains

Bug: http://b/32123312
Test: mm && boot
Change-Id: I6550fbe2bd5f9f5a474419b483b0f786d4025e88
diff --git a/public/domain.te b/public/domain.te
index 8bdd548..e2ffb88 100644
--- a/public/domain.te
+++ b/public/domain.te
@@ -55,7 +55,7 @@
 
 # Root fs.
 allow domain rootfs:dir search;
-allow domain rootfs:lnk_file read;
+allow domain rootfs:lnk_file { read getattr };
 
 # Device accesses.
 allow domain device:dir search;