[WCNCR00154466] misc: Change noise info source of driver "stat" result

[Description]
Change noise info source of iwpriv wlan0 driver "stat" result.
Use the "Idle average power" values from PHY CR as noise value.

Change-Id: I50f807e540d666edfcfba039965cb8e6e791b4af
Signed-off-by: Awk Jiang <awk.jiang@mediatek.com>
CR-Id: WCNCR00154466
Feature: misc
1 file changed