AGESA: BIST is already preserved

Officialy we enter with BIST in %eax, but %ebp is old backup register.
Note that post_code() destroys %al.

Change-Id: I77b9a80aac11ae301fdda71c2a20803d7a5fb888
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/18625
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed