Add RCSID when needed.
Don't include pmap.h or pte.h, include "assym.h" instead.
Use assym.h provided values.

A port of NetBSD to the I-O DATA HDL-G "Giga LANDISK".

Please refer to following URL for this machine.
http://www.iodata.com/products/products.php?cat=HNP&sc=HDL&ts=2&tsc=14&sc=HDL&pId=HDL-G400U