bootstage: Convert net progress numbers to enums

This changes over the network-related progress numbers to use enums
from bootstage.h.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/Seagate/dockstar/dockstar.c b/board/Seagate/dockstar/dockstar.c
index 8cbfb02..38473e5 100644
--- a/board/Seagate/dockstar/dockstar.c
+++ b/board/Seagate/dockstar/dockstar.c
@@ -172,7 +172,7 @@
 	case BOOTSTAGE_ID_RUN_OS:		/* booting Linux */
 		set_leds(BOTH_LEDS, NEITHER_LED);
 		break;
-	case 64:		/* Ethernet initialization */
+	case BOOTSTAGE_ID_NET_ETH_START:	/* Ethernet initialization */
 		set_leds(GREEN_LED, GREEN_LED);
 		break;
 	default: