This patch add support for the MacBookAir3,1 and MacBookAir3,2 to the
applesmc driver.

[rydberg@euromail.se: minor cleanup]
Cc: stable@kernel.org
Signed-off-by: NEdgar Hucek <gimli@dark-green.com>
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>