Add support utils for tracing

Add support utils for tracing

Following patch adds a userspace util genprof
which is able to convert the console printed
traces to gmon.out file used by gprof & friends.
The log2dress will replace the adresses in logfile
with a line numbers.

Change-Id: I9f716f3ff2522a24fbc844a1dd5e32ef49b540c5
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/179
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>