ath6kl: Process regulatory requests from firmware.

Process the regulatory code from eeprom and pass the
country information to cfg80211.

kvalo: add space between struct name and *

Signed-off-by: Vivek Natarajan <nataraja@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>