hw: input: set category of the i8042 device

Sets the category of i8042 device as DEVICE_CATEGORY_INPUT
Devices should be assigned to one of DEVICE_CATEGORY_XXXX.

Signed-off-by: kumar sourav <sourav.jb1988@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20190125151440.13794-1-sourav.jb1988@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

hw/input/pckbd.c

@@ -574,6 +574,7 @@ static void i8042_class_initfn(ObjectClass *klass, void *data)
 
     dc->realize = i8042_realizefn;
     dc->vmsd = &vmstate_kbd_isa;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
 }
 
 static const TypeInfo i8042_info = {