Add Windows OS Descriptors for Automatic NCM Driver Binding

[mihai-chiorean]

Description

Currently, the USB gadget in meta-edgeos uses static MAC addresses and lacks Windows OS descriptors. This causes Windows to not automatically bind the correct driver for NCM networking.

Background

Windows 10+ includes a built-in NCM driver (UsbNcm.sys) but needs OS descriptors to automatically bind it. Without these descriptors, users must manually install drivers or Windows falls back to less efficient protocols.

References

• Microsoft OS Descriptors for USB
• Linux USB Gadget OS Descriptors

Implementation from edgeos-flavor

# Lines 65-72 in edgeos-usbgadget-init.sh
mkdir -p "$G/os_desc"
echo 1        > "$G/os_desc/use"
echo 0xbc     > "$G/os_desc/b_vendor_code"
echo MSFT100  > "$G/os_desc/qw_sign"
mkdir -p "$G/functions/$FUNC_NCM/os_desc/interface.ncm"
echo WINNCM   > "$G/functions/$FUNC_NCM/os_desc/interface.ncm/compatible_id"

Acceptance Criteria

• Windows 10/11 automatically uses NCM driver without manual installation
• OS descriptors properly configured in usb-gadget.sh
• Tested on Windows 10 and 11