COMPAT_PROP_PCP is 'on' by default and it's used for turning
off PCP capability on PCIe slots for 2.0 machine types using
compat machinery.
Drop not needed compat glue as Q35 supports migration starting
from 2.4 machine types.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20220222102504.3080104-1-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>