m48t59: add m48t59 sysbus device

This is for subsequent use by the sun4u machine.
Reviewed-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

hw/timer/m48t59.c

@@ -128,6 +128,10 @@ static M48txxInfo m48txx_info[] = {
         .sysbus_name = "sysbus-m48t08",
         .model = 8,
         .size = 0x2000,
+    },{
+        .sysbus_name = "sysbus-m48t59",
+        .model = 59,
+        .size = 0x2000,
     },{
         .isa_name = "isa-m48t59",
         .model = 59,