ARM: dts: msm: Add WLAN_EN GPIO 82 and regulator items for APQ8084

Add the WLAN_EN GPIO 82 and the voltage regulator items in device tree
for CNSS platform driver for APQ8084 to manage the power to WLAN.

Change-Id: Ia2b785d2897f7f8da2b7202830b06a4f222ccc63
Acked-by: Sundar Subramaniyan <subrams@qti.qualcomm.com>
Signed-off-by: Sameer Thalappil <sameert@codeaurora.org>