EmbeddedPkg/AndroidFastbootTransportTcpDxe: fix DestroyChild() call

EmbeddedPkg/AndroidFastbootTransportTcpDxe: fix DestroyChild() call

- The 2nd parameter of EFI_SERVICE_BINDING_CREATE_CHILD is:

  IN OUT EFI_HANDLE *ChildHandle

- The 2nd parameter of EFI_SERVICE_BINDING_DESTROY_CHILD is:

  IN EFI_HANDLE ChildHandle

Fix the DestroyChild() call in TcpFastbootTransportStop().

This is an actual bugfix; I don't know why the current code doesn't crash.
Perhaps the function is never reached in practice? (It could be tied to an
error path.)

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>