Support console on DECstation DZ serial driver

configname: CONFIG_SERIAL_DZ_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Support console on DECstation DZ serial driver
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you say Y here, it will be possible to use a serial port as the
system console (the system console is the device which receives all
kernel messages and warnings and which allows logins in single user
mode).

Note that the firmware uses ttyS3 as the serial console on
DECstations that use this driver.

If unsure, say Y.