qcacld-3.0: Add a sysfs replacement for dl_mode commands
As part of WEXT replacement, replace dl_loglevel, dl_mod_loglevel,
dl_modoff, dl_modon, dl_report, dl_type, dl_vapoff, dl_vapon with
a sysfs file.
file path: /sys/class/net/wlanxx/dl_loglevel
file path: /sys/class/net/wlanxx/dl_mod_loglevel
file path: /sys/class/net/wlanxx/dl_modoff
file path: /sys/class/net/wlanxx/dl_modon
file path: /sys/class/net/wlanxx/dl_report
file path: /sys/class/net/wlanxx/dl_type
file path: /sys/class/net/wlanxx/dl_vapoff
file path: /sys/class/net/wlanxx/dl_vapon
wlanxx is adapter name
example: echo 1 > dl_loglevel
example: echo 1 > dl_mod_loglevel
example: echo 1 > dl_modoff
example: echo 1 > dl_modon
example: echo 1 > dl_report
example: echo 1 > dl_type
example: echo 1 > dl_vapoff
example: echo 1 > dl_vapon
Change-Id: Ic3d748738d0072e42b7ff07177f2ca711b333193
CRs-Fixed: 2715053
38888ae732