We need to default this to low so the speakers don't activate in S3.
BUG=b:118248953
TEST=Used a scope to look at the line and made sure depthcharge still
beeps.
Change-Id: I70d2f4a3261d212b62e784fa7414e45b1d575612
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/c/29783
Reviewed-by: Daniel Kurtz <djkurtz@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
deed1e3c63