aml-commonlib: add wpa_wifi_util [2/2]

PD#SWPL-151513

Problem:
Currently, connecting to wifi mainly uses script commands, which
are not convenient for programs to call.

Solution:
Use wpa_client.so to communicate with the wpa_supplicant backend program
via socket to avoid calling wpa_cli directly.

Verify:
a5

Change-Id: I1d12b08569f9044bbb58d48c68a93d7615efea92
Signed-off-by: yifan.li <yifan.li@amlogic.com>
4 files changed