selfboot: Add support for selfload in romstage

Since bootmem is not available in romstage, calls to bootmem APIs need
to be compile-time eliminated in order to avoid linker error:

     undefined reference to `bootmem_region_targets_type

BUG=None
BRANCH=None
TEST=./util/abuild/abuild -p none -t GOOGLE_HEROBRINE -x -a -B
     cherry-picked on top of CB:49392 and verified successful
     compilation.

Change-Id: I8dfa2f2079a9a2859114c53c22bf7ef466ac2ad9
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55865
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions