vboot: move ec_sync to vboot2 namespace

Move ec_sync.c to vboot2 namespace.  Keep its API in vboot_api.h
for the time being.

BUG=b:124141368, chromium:1016688, b:112198832, b:143094352
TEST=make clean && make runtests
BRANCH=none

Change-Id: Ia925e93ecdcdb1a2a2724336774f48dbe0439743
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1872254
Tested-by: Joel Kitching <kitching@chromium.org>
Commit-Queue: Sean Abraham <seanabraham@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
8 files changed