This mouse has a horizontal wheel that requires special handling.
Without this patch, the horizontal wheel acts like a vertical wheel.

In the output of `hidrd-convert` for this mouse, there is a
`Usage (B8h)` field. It corresponds to a byte in packets sent by the
device that specifies which wheel generated an input event.

The name "A4TECH" is spelled in all capitals on the company website.
Signed-off-by: NMateusz Jończyk <mat.jonczyk@o2.pl>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>