msmnile: Define WIFI_DRIVER_STATE_CTRL_PARAM to write WLAN status

Define path of WIFI_DRIVER_STATE_CTRL_PARAM i.e /dev/wlan
to update status of WLAN Driver on loaded/unloaded by writing
ON/OFF.

Change-Id: I9964a7a3b779f036975b3f461118e86e093a13ea
CRs-Fixed: 2706935

msmnile/BoardConfigWlan.mk

 BOARD_VENDOR_KERNEL_MODULES += $(KERNEL_MODULES_OUT)/qca_cld3_wlan.ko
 
+WIFI_DRIVER_STATE_CTRL_PARAM := "/dev/wlan"
+WIFI_DRIVER_STATE_ON := "ON"
+WIFI_DRIVER_STATE_OFF := "OFF"