vboot: use vboot 2 flags for checking rec/dev mode

Use vboot 2 flags for checking whether dev mode is enabled, and
whether manual recovery was requested.

  VBSD_BOOT_DEV_SWITCH_ON --> VB2_SD_FLAG_DEV_MODE_ENABLED
  VBSD_BOOT_REC_SWITCH_ON --> VB2_SD_FLAG_MANUAL_RECOVERY

BUG=b:124141368, chromium:1038260
TEST=make clean && make runtests
BRANCH=none

Change-Id: Idb439f658391f46170704a0fd614853054e1c64d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1992852
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
7 files changed