Allow getattr on rootfs:lnk_file for all domains

Bug: http://b/32123312
Test: mm && boot
Change-Id: I6550fbe2bd5f9f5a474419b483b0f786d4025e88

public/domain.te

@@ -55,7 +55,7 @@ userdebug_or_eng(`
 
 # 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;