Add and use usb-network package

The usb-network.bb addes the service and config to enable usb-network by
default.

Tested: Verify that the usbeth0 device is created by default.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: Ib06f889c42ca3a9dcfa264e05209d39832586f3e
diff --git a/recipes-bytedance/usb-network/files/usb_network.service b/recipes-bytedance/usb-network/files/usb_network.service
new file mode 100644
index 0000000..bb20acd
--- /dev/null
+++ b/recipes-bytedance/usb-network/files/usb_network.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=Enable usb network
+After=phosphor-ipmi-host.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/usb-ctrl ecm usbeth0 on
+ExecStop=/usr/bin/usb-ctrl ecm usbeth0 off
+
+[Install]
+WantedBy=multi-user.target