mainboard/amd: De-ASCIIartify reference boards

For anyone who knows the difference between a header and a variable in C
these depictions are rather useless. Thus, these lines wast essential
screen real estate while working on coreboot.

Change-Id: I7fe55d936c035ef83832716c45bfc57d73c0edc7
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5979
Tested-by: build bot (Jenkins)
Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
24 files changed