Add usb-ctrl for USB gadget control

The usb-ctrl is copied from [intel-bmc][1] that creates/destroy USB
mass-storage devices via USB gadget driver.
It supports multiple devices and could be extended with future features.

[1]: https://github.com/Intel-BMC/openbmc/blob/intel/meta-openbmc-mods/meta-common/recipes-core/fw-update/files/usb-ctrl

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: Ie875e7e385ddacef82b7e4d20795c97c001384b3
diff --git a/meson_options.txt b/meson_options.txt
index b9aade8..75405d9 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -7,3 +7,6 @@
 option(
     'http-redirect', type: 'feature', description: 'Redirect http traffic to https.',
 )
+option(
+    'usb-ctrl', type: 'feature', description: 'Control USB gadget devices',
+)