Almost perfect minimalistic build (2 logread errors?)

As anyone of you ever encountered these two errors on their logread?

...
Can't analyze schedule() prologue at 803adb48
...
user.notice mac80211: Failed command: iw phy phy0 set antenna all all
...

Device TP-W8970 v1
OpenWRT 18.06 r7638-c5c20f510a
Config (difffile) + buildlog + complete logread + built image + current /etc/config folder: https://ufile.io/z5qmo

UPDATE:
Also, for the vdsl.bin file (vdsl firmware) I put it there manually (so I save a lot of space on the final image, I can also remove bspatch and some other stuffs). I use the last available version redistributable version (the same openwrt normally use: http://mirror2.openwrt.org/sources/dsl_vr9_firmware_xdsl-05.08.01.08.01.06_05.08.00.0B.01.01_osc.tar.gz