Commit 035567b279 solved the build issue
of pppd with Linux 4.8 kernel headers, but in the process broke the
build with older kernel headers such as 3.10.
This commit takes a different approach, by moving the <netinet/in.h>
include above linux header includes.
Linux uapi headers try to avoid redeclaring things from libc via
linux/libc-compat.h. However that only works if the libc header is
included first.
Signed-off-by: Stefan Nickl <Stefan.Nickl@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
9d08404d9a