util-linux: disable raw

raw.h has been dropped in linux-libc-headers-5.14 leading to:

configure: error: raw selected, but required raw.h header file not available
WARNING: exit code 1 from a shell command.

Signed-off-by: MarkusVolk <f_l_k@t-online.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 7f577c10)
Signed-off-by: Steve Sakoman <steve@sakoman.com>