staging: r8188eu: ensure proper alignment for eth address buffers

Add __aligned(2) to eth address buffers in structs rx_pkt_attrib and
pkt_attrib to ensure proper alignment for usage with functions from
<linux/etherdevice.h>

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210823120106.9633-2-straube.linux@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>