ANDROID: GKI: update .xml file

Commit a6e6392e ("ANDROID: restore abi breakage in usbnet.h")
restored the abi due to previous commits changing it, but we need to
update the .xml file as well to prevent this warning from showing up in
the build logs:

'struct usbnet at usbnet.h:29:1' changed:
  type size hasn't changed
  there are data member changes:
    data member u64 android_kabi_reserved1 at offset 4992 (in bits) became anonymous data member 'union {struct {u32 rx_speed; u32 tx_speed;}; struct {u64 android_kabi_reserved1;} __UNIQUE_ID_android_kabi_hide209; union {};}'
  11 impacted interfaces

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I857e40e57fe76654d443cf765b617005e5330ddb