Enable USB gadget ECM support in kernel config

The USB gadget ECM enables the BMC to enumrate as an ethernet device to
the host.

(From meta-bytedance rev: 9447c4e6d55b1f8ed57f42f46c3c3a8041e4a5ca)

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I2a64716588b88950df41880f01e2ff76fbf70b6f
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-bytedance/recipes-kernel/linux/linux-aspeed_%.bbappend b/meta-bytedance/recipes-kernel/linux/linux-aspeed_%.bbappend
new file mode 100644
index 0000000..a8255c5
--- /dev/null
+++ b/meta-bytedance/recipes-kernel/linux/linux-aspeed_%.bbappend
@@ -0,0 +1,3 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+SRC_URI += " file://usbctl.cfg"