xserver-nodm-init: Change to vt1 when stop

When X is stopped it remains in the same vt that was launched,
change to vt1 instead to avoid manual vt switch.

[YOCTO #5336]

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>