meta-facebook: network: fix network type

Type=ether will match all interface, it will impact some static device.
example: usb0

use Driver=ftgmac100 to set bmc ethernet interface.

Change-Id: I9ef33619595055d990d5a356b02e5fbfcfe559a8
Signed-off-by: Peter Yin <peter.yin@quantatw.com>
diff --git a/meta-facebook/recipes-phosphor/network/phosphor-network/00-bmc-eth.network b/meta-facebook/recipes-phosphor/network/phosphor-network/00-bmc-eth.network
index fdca5f9..ed262c6 100644
--- a/meta-facebook/recipes-phosphor/network/phosphor-network/00-bmc-eth.network
+++ b/meta-facebook/recipes-phosphor/network/phosphor-network/00-bmc-eth.network
@@ -1,5 +1,6 @@
 [Match]
-Type=ether
+Driver=ftgmac100
+
 [Network]
 DHCP=true
 LinkLocalAddressing=ipv6