Improve FreeBSD networking support.

Improve FreeBSD networking support.

dev/ns_gige.cc:
    Added FreeBSD support.  Required additional register read/write functionality, hash filtering (faked), and EEPROM read access.
dev/ns_gige.hh:
    Added constants and variables for FreeBSD support.  Also created eepromKick() to advance state machine.
dev/ns_gige_reg.h:
    Defined additional register bit fields.
dev/pcidev.cc:
    Fix &= typo.
dev/sinic.cc:
    Remove an INIT_PARAM_DFLT macro.
dev/tsunami_io.cc:
    Fix DPRINTF typo.
kern/freebsd/freebsd_system.cc:
    Edit comments.

--HG--
extra : convert_revision : 37aaa1303d57d3784381e85acb3bc1743adeb8c0