This ensures that busybox init can generate matching tty's in inittab as
system defines, secondly resepcts USE_VT for creating virtual ttys
(From OE-Core rev: 7dddda7a00108f9a61da4a869514a32b9f42d16a)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>