8250/16550 PNP device support

configname: CONFIG_SERIAL_8250_PNP

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Plug and Play support
└─>8250/16550 PNP device support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This builds standard PNP serial support. You may be able to
disable this feature if you only need legacy serial support.