wcnss: Add support to wlan indication LED

The WLAN indication LED will be turned on/off when
WLAN will be enabled/disabled respectively.

Change-Id: I5d11720a892b8914c758eec9c798e2bd93c233ef
Signed-off-by: Shimrit Malichi <smalichi@codeaurora.org>
Signed-off-by: Tanya Finkel <tfinkel@codeaurora.org>
Signed-off-by: Bharat Pawar <bpawar@codeaurora.org>
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>