[WCNCR00149755] coex: add set/query command for PTA

[Description]
add set command to set PTA enable, priority tag
add query command to get PTA status, tag val, grant status

read/write command format by iwpriv wlanX driver:
Help menu
Write: "pta_config set [enable 1|0][txtag val][rxtag val][prottag val]"
Read: "pta_config get"

Change-Id: I90ef595f8bd9fb710a8858891339312d37e5b5a3
Feature: coex
Signed-off-by: yuchi.wang <yuchi.wang@mediatek.com>
CR-Id: WCNCR00149755
6 files changed