sysvinit: Mark as machine specific since there are machine specific components to this recipe
The inittab file depends on variables that are part of the machine config
such as the SERIAL_CONSOLE so the whole recipe must get built as machine
specific. Better might be to split the config out into a separate recipes
from the binaries but this fixes the immediate problem.
[YOCTO ##1131]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
