Debug FSP is ~920KiB larger than release FSP and we don't have
sufficient space for rex flash layout.
Remove RW_LEGACY and split them into RW_SECTION_A/B so we can have a
room for it.
Note: This fmd will only used for internal testing/debugging and not for
the firmware in released devices.
BUG=b:262868089
TEST=Build google/rex with CONFIG_BUILDING_WITH_DEBUG_FSP.
Change-Id: I58b0af9c43c5d096dc80084497b39f13f67c25cd
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74140
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
4f9753e480