GitLab

This came up when I was testing if building on SunOS still works
on the buildbot's instance of OmniOS r151014 which is based on illumos.

The fix is
 - to link against libnsl
 - a small C type fix in ich_descriptor_tool

Corresponding to flashrom svn r1950.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>