It was reported, that latest ar71xx builds have broken networking on
TP-Link TL-WPA8630 and Nanostation M5 XW devices and that by reverting
the offending commit, everything is back to normal.
Fixes: d3506d1 ("ar71xx: ag71xx: fix compile error when enabling debug")
Signed-off-by: Petr Štetiar <ynezz@true.cz>