mwifiex: handle multichannel event

This patch adds support to handle multichannel event from FW.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --cc drivers/net/wireless/mwifiex/fw.h
Simple merge

diff --cc drivers/net/wireless/mwifiex/main.h
Simple merge

diff --cc drivers/net/wireless/mwifiex/sta_event.c
Simple merge

diff --cc drivers/net/wireless/mwifiex/uap_event.c
Simple merge