Smack: add missing support for transmute bit in smack_str_from_perm()

This fixes audit logs for granting or denial of permissions to show
information about transmute bit.

Targeted for git://git.gitorious.org/smack-next/kernel.git

Signed-off-by: Rafal Krypa <r.krypa@samsung.com>
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index db14689..2e397a8 100644
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -252,6 +252,8 @@
 		string[i++] = 'x';
 	if (access & MAY_APPEND)
 		string[i++] = 'a';
+	if (access & MAY_TRANSMUTE)
+		string[i++] = 't';
 	string[i] = '\0';
 }
 /**