ConfigFS USB attrs are customizable based on the `deviceinfo_usb_*` variables,
however some downstream kernels (e.g: msm-3.18) doesn't use configfs, instead
uses the traditional Android USB Gadget.
Based on `deviceinfo_usb_{idVendor/idProduct}` variables, we can change the USB
vendor and product.
So that on these devices, we can make it appear on USB bus as the correct USB
vendor/product ID, not "Google Inc. Nexus 4 (fastboot)"
Signed-off-by: Danct12 <danct12@disroot.org>