According to DISTRO_FEATURES then add screen pam support or not.
Press "Ctrl+a x" will lock the screen terminal, then unlock it will
use pam.
Add pam related configure file sceen.pam from Fedora.
(From OE-Core rev: 7c08305f8008ab322d19d0a0852a851fd44ae510)
Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Kang Kai