vboot: move timer and beep functions to vboot2 namespace

Move these functions from vboot_api.h into 2api.h:
  VbExGetTimer --> vb2ex_mtime (usec -> msec)
  VbExSleepMs --> vb2ex_msleep
  VbExBeep --> vb2ex_beep

Rename the constants:
  VB_USEC_PER_MSEC --> VB2_USEC_PER_MSEC
  VB_MSEC_PER_SEC --> VB2_MSEC_PER_SEC
Remove the constant VB_USEC_PER_SEC.

The error code VBERROR_NO_BACKGROUND_SOUND is dropped since
it is not currently used.

Update a few printf lines to use VB2_DEBUG instead.

BUG=b:124141368, chromium:988410
TEST=make clean && make runtests
BRANCH=none

Change-Id: I887112ffd5f68fb6a9c4d9ad624aa420cbd55b4b
Signed-off-by: Joel Kitching <kitching@google.com>
Cq-Depend: chromium:2158665
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2158666
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
20 files changed