erley.org no longer exists; attempting to connect to it during package
download results in lengthy timeouts. Use the new OpenWrt CDN alias to
download from reliable OpenWrt mirrors.
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
The SUBDIRS variable has been removed in kernel 5.4, and was deprecated
since the beginnig of kernel git history in favour of M or KBUILD_EXTMOD.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
