meta-quanta: gbs: fix the SpeedMbps of ethernet interfaces in Redfish

Enable it if your NIC driver supports the ETHTOOL features and
it will fix showing 0 for the SpeedMbps of ethernet interfaces
in Redfish

Signed-off-by: George Hung <george.hung@quantatw.com>
Change-Id: I9adf842ca0d177de6d705f5d00a8b26926731921
diff --git a/meta-gbs/recipes-phosphor/network/phosphor-network_%.bbappend b/meta-gbs/recipes-phosphor/network/phosphor-network_%.bbappend
new file mode 100644
index 0000000..49959cc
--- /dev/null
+++ b/meta-gbs/recipes-phosphor/network/phosphor-network_%.bbappend
@@ -0,0 +1 @@
+EXTRA_OECONF_append_gbs = " --enable-nic-ethtool=yes"