SELinux: loosen DAC perms on reading policy

There is no reason the DAC perms on reading the policy file need to be root
only.  There are selinux checks which should control this access.

Signed-off-by: Eric Paris <eparis@redhat.com>
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index d6ae2d4..f4b5a0b 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1832,7 +1832,7 @@
 		[SEL_REJECT_UNKNOWN] = {"reject_unknown", &sel_handle_unknown_ops, S_IRUGO},
 		[SEL_DENY_UNKNOWN] = {"deny_unknown", &sel_handle_unknown_ops, S_IRUGO},
 		[SEL_STATUS] = {"status", &sel_handle_status_ops, S_IRUGO},
-		[SEL_POLICY] = {"policy", &sel_policy_ops, S_IRUSR},
+		[SEL_POLICY] = {"policy", &sel_policy_ops, S_IRUGO},
 		/* last one */ {""}
 	};
 	ret = simple_fill_super(sb, SELINUX_MAGIC, selinux_files);