[WCNCR00164380] perf : Add Coex related iwpriv command

[Description]
This command should be used by coex related sub-commands.
Command ID : CMD_ID_COEX_CTRL (0x7C)

If you want to use isolation detection method,
you should enter the command like:
iwpriv wlan0 driver "coex_ctrl 1 0 6 0"

The argument in the command is
[Subcmd id] [WF Path] [WF Channel] [WF Band]
and you can add command like this.

Change-Id: I3b1e11174524fd0845f91f8beaf83013866f27d1
Signed-off-by: Jared Huang <jared.huang@mediatek.com>
CR-Id: WCNCR00164380
Feature: perf
5 files changed