ANDROID: GKI: USB: add Android ABI padding to some structures

To try to mitigate potential future USB api changes, add some padding to
the following structures:
	struct usb_interface
	struct usb_host_bos
	struct usb_bus
	struct usb_device
	struct usb_driver
	struct urb
	struct usb_hcd
	struct hc_driver
	struct usb_tt
	struct usbnet
	struct driver_info (for usbnet driver)

Based on a patch from Oliver Neukum <oneukum@suse.de> from the SLES
kernel.

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ie9e246d9333ac70fc9cc2b0bf7cb466a8ffdb6de