rtlwifi: rtl8192ce: Add code to set the keep-alive operation

This change helps the device maintain a connection.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --cc drivers/net/wireless/rtlwifi/rtl8192c/fw_common.h
Simple merge

diff --cc drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
Simple merge