payloads/external/SeaBIOS: Update makefile for olddefconfig

Instead of creating the SeaBIOS .config file for QEMU, then changing
things to be coreboot specific, create a default config for coreboot,
then run olddefconfig to use the SeaBIOS defaults as they're set for
coreboot.  This leads to a cleaner config.

Note that CONFIG_THREAD_OPTIONROMS defaults to enabled for SeaBIOS if
we're building for coreboot, so I reversed the logic.

I *ASSUMED* that leaving CONFIG_QEMU_HARDWARE=y and CONFIG_DEBUG_IO=y
previously was an oversight.  If this is not correct, please let me
know and I'll add them it back in.  SeaBIOS disables these by default
if building for coreboot.

Change-Id: I42c6a56205bb15c6693a5f3a716b7876a4d78abe
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/6362
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

0 files changed, 0 insertions, 0 deletions