[WCNCR00166482] misc: Fix get_csi content incomplete issue

[Description]
Fix get_csi content incomplete issue

The output of the CSI IQ data may be larger than the iwpriv buffer,
so separate the get CSI command into:
iwpriv wlan0 driver "get_csi 0" -> Get I data
iwpriv wlan0 driver "get_csi 1" -> Get Q data

Be noted that if one of above command executed, another should be
executed later, or the new CSI data from FW will be ignored.

Change-Id: Ie50df6d7edb2f21033ae36d42d3e4bab011d5610
Signed-off-by: Awk Jiang <awk.jiang@mediatek.com>
CR-Id: WCNCR00166482
Feature: misc
3 files changed