* Conditionally select FSP 2.4 when x86_64 support is available
(HAVE_X86_64_SUPPORT).
* Default to FSP 2.3 otherwise.
* Adjust default FSP header path to align with architecture.
BUG=b:242829490
TEST=Able to build google/rex in both 32-bit and 64-bit mode.
Change-Id: Ib77a34c6bf7bca3485a197f109d1550ac3d51cc0
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82624
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>