Introduce fw_name field to DeviceInfo structure.

Add "fw_name" to DeviceInfo to use in device path building. In
contrast to "name" "fw_name" should refer to functionality device
provides instead of particular device model like "name" does.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/hw/fdc.c b/hw/fdc.c
index bea5af2..589bf06 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -2042,6 +2042,7 @@
 static ISADeviceInfo isa_fdc_info = {
     .init = isabus_fdc_init1,
     .qdev.name  = "isa-fdc",
+    .qdev.fw_name  = "fdc",
     .qdev.size  = sizeof(FDCtrlISABus),
     .qdev.no_user = 1,
     .qdev.vmsd  = &vmstate_isa_fdc,