efi_loader: fill simple network protocol revision

Provide the simple network protocol revision.
This revision number could be used to identify backwards compatible
enhancements of the protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index 91f1e4a..fb23bcf 100644
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -228,6 +228,7 @@
 	netobj->parent.protocols[2].guid = &efi_pxe_guid;
 	netobj->parent.protocols[2].protocol_interface = &netobj->pxe;
 	netobj->parent.handle = &netobj->net;
+	netobj->net.revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
 	netobj->net.start = efi_net_start;
 	netobj->net.stop = efi_net_stop;
 	netobj->net.initialize = efi_net_initialize;