Since SRAM space is too small to fit all needed features, enable
VBOOT_RETURN_FROM_VERSTAGE and overlap decompressor, verstage and
romstage to gain more space.
BUG=b:134351649
BRANCH=none
TEST=emerge-kukui coreboot
Change-Id: Ibe336cf93b01fa2ea57b4c2e0a89685424878c91
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34871
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
526d840b13