This changes were during Christmas holidays commited to OpenWrt master
branch and before the OpenWrt 19.07 release, they were included there as
well.

It was reverted in master, when we noticed that
(0711c2c8), it should be fixed that why
it was reverted back, however, there are still some issues which needs
to be solved.

Fixes: turris/turris-build#103
(temporarily)