Makefile: Build futility without utillib to extend arch support
Makefile: Build futility without utillib to extend arch support

This removes utillib from the futility build and adds only the required
files from utillib to its build. Utillib includes arch-specific
components (required for crossystem) that only have a limited number of
supported architectures, which is undesirable for futility.

The number of archs that futility can run on is no longer restricted.

BUG=None
BRACH=None
TEST=Build futility and futility_s

Change-Id: Ia9ad2a72b374b5cc3d6004d36c0b7090dbcc97a2
Signed-off-by: Paul Kocialkowski <1a73af9e7ae00182733b2292511b814be66f065f@paulk.fr>
Reviewed-on: https://chromium-review.googlesource.com/666625
Reviewed-by: Julius Werner <4d12f06cff3725783b352157673a720bc67c4afe@chromium.org>
Reviewed-by: Patrick Georgi <bc411205f21846a74924ee7b489c75617ec76078@chromium.org>

coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot,coreboot/vboot