console/Kconfig: Enable CBMEM console by default

Currently on AMD boards no romstage messages can be saved in CBMEM, so
only messages from ramstage on will be stored in CBMEM. Other than
that nothing changes.

Enabling CBMEM console by default does not noticeably decrease boot
time as the messages are directly written to CAR or RAM.

The board status script under `util/board_status/` reads the coreboot
messages from CBMEM, which are then uploaded to the board status
repository. With CBMEM console disabled by default, currently no
coreboot console messages are uploaded to the board status repository,
although it is important to have those.

Enabling CBMEM console by default improves this situation, so that for
all boards at least ramstage messages are stored in the board status
repository.

Change-Id: I8d5a58c078325c43a0317bcfaafc722d039aab0b
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5350
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)
1 file changed