pci_ids, add atheros and 3com_2 vendors

Atheros is wifi vendor. 3com_2 (0xa727) is an vendor id for one card with
ath chip.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>