fasttrap_fork(): unlock the processes before removing the tracepoints.

In the future, we'll need to come up with new proc_*() functions that accept
locked processes. For now, this prevents postgresql + DTrace from crashing the
system.

MFC after:	1 month
Update the 6000g2a image.

Obtained from:	Linux, Intel
Remove a now-unused firmware.
Add firmware for the Intel 2030 and variants.

Submitted by:	Cedric GROSS <cg@gross.info>
Obtained from:	Linux, Intel