macloader: Add another SEMCO mac address half

Order existing SEMCO values while we're at it.

Change-Id: I2b5c8a3e458cbcf41ea78eb953117a6779db2cc0

macloader/macloader.c

@@ -196,8 +196,9 @@ int main() {
     }
 
     /* semco */
-    if (strncasecmp(mac_addr_half, "c0:bd:d1", 9) == 0 ||
+    if (strncasecmp(mac_addr_half, "51:f6:6b", 9) == 0 ||
-        strncasecmp(mac_addr_half, "51:f6:6b", 9) == 0) {
+        strncasecmp(mac_addr_half, "c0:bd:d1", 9) == 0 ||
+        strncasecmp(mac_addr_half, "ec:9b:f3", 9) == 0) {
         type = SEMCO;
     }