Add ttyGS0 to securetty

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

fs/skeleton/etc/securetty

@@ -46,3 +46,4 @@ ttySC2
 ttySC3
 ttySC4
 ttySC5
+ttyGS0