use tty1 for ash job control

target/x86/files/etc/inittab

@@ -1,4 +1,4 @@
 ::sysinit:/etc/init.d/rcS
 ::shutdown:/etc/init.d/rcK
 ttyS0::respawn:/sbin/getty -i -L ttyS0 115200 vt100
-tty0::askfirst:/sbin/getty -i -L tty0 115200 vt100
+tty1::askfirst:/sbin/getty -i -L tty1 115200 vt100

target/x86_64/files/etc/inittab

@@ -1,4 +1,4 @@
 ::sysinit:/etc/init.d/rcS
 ::shutdown:/etc/init.d/rcK
 ttyS0::respawn:/sbin/getty -i -L ttyS0 115200 vt100
-tty0::askfirst:/sbin/getty -i -L tty0 115200 vt100
+tty1::askfirst:/sbin/getty -i -L tty1 115200 vt100