[][MAC80211][app][Add atenl prek support in eagle]

[Description]
Add atenl prek support in eagle.
Adjust precal info encoding mask to fit in eagle's dpd chan size.

[Release-log]
N/A

Change-Id: I22b0a4d3d6a02f6f0e1c02fcba584a2a48c38f7d
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7329678
3 files changed