pc: Fix "prog_if" typo on PC_COMPAT_2_0

The property name is "prog_if", not "prof_if".

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reported-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 81718b8..1c0c382 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -321,7 +321,7 @@
         },\
         {\
             .driver   = "pci-serial-2x",\
-            .property = "prof_if",\
+            .property = "prog_if",\
             .value    = stringify(0),\
         },\
         {\