The securetty file is machine specific whilst the rest of the shadow recipe
is not. Unfortunately making the recipce machine specific is both inefficient
and also causes dependency problems since parts of the system such as the useradd
code depend upon it and this introduces a machine specific element to sstate
checksums which should not be machine specific.
To resolve this, this patch separates out the file into a separate recipe
meaning the machine specific components are isolated.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
