omap_intc: Use typedef name for instance_size

This makes the code consistent with the rest of QOM code in QEMU,
and will make automated conversion to type declaration macros
simpler.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200824215936.2961951-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/intc/omap_intc.c

@@ -676,7 +676,7 @@ static const TypeInfo omap2_intc_info = {
 static const TypeInfo omap_intc_type_info = {
     .name          = TYPE_OMAP_INTC,
     .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_size = sizeof(struct omap_intr_handler_s),
+    .instance_size = sizeof(omap_intr_handler),
     .abstract      = true,
 };