The etcdir string was replaced by sysconfdir.
Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
(From yocto-docs rev: 095a9226171189f17c0671b05196cef58da33732)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>