USB: cypress_m8: add UPS Powercom (0d9f:0002)

Add support for UPS Powercom USB interface (0d9f:0002) in chip CY7C63723.
In my case, this Powercom BNT800AP.

Signed-off-by: Dmitry Shapin <shapin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>