Allow registering TTYs that are not yet available
Allow registering TTYs that are not yet available

This patch removes the following very annoying warning for TTY devices
not yet available, i.e. plugged-in to the system.

Loading configuration ............................................................................. [ OK ]
[   11.097414] finit[1]:tty_register():Incomplete or non-existing TTY device given, cannot register.
[   11.101457] finit[1]:tty_register():Incomplete or non-existing TTY device given, cannot register.
Mounting filesystems .............................................................................. [ OK ]

Finit will not start a getty (built-in or external) if the TTY does not
exist, but having the configuration enabled makes it possible to do a
simple `initctl reload` to activate a plugged in TTY.

Signed-off-by: Joachim Nilsson <583c295fd7602c168ad814279bbc3894ba65f5d6@gmail.com>

troglobit/finit,troglobit/finit