mainboard/amd/tilapia_fam10: Use C89 comments style & remove commented code

Change-Id: I7515288190ca57a321fb8ffe57a1181b638c336a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/16978
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
3 files changed