CRAS: alsa_jack - Move wait_for_dev_input_access to cras_util

Move wait_for_dev_input_access to cras_utils so we can overwrite it in
unittest.

BUG=None
TEST=make check, run alsa_jack_unittest and see it finishes within 1
second instead of 40 seconds.

Change-Id: Id0f293e9b5ee1d56c151d918314ea85ff936a3c9
Reviewed-on: https://chromium-review.googlesource.com/416091
Commit-Ready: Cheng-Yi Chiang <cychiang@chromium.org>
Tested-by: Cheng-Yi Chiang <cychiang@chromium.org>
Reviewed-by: Cheng-Yi Chiang <cychiang@chromium.org>
4 files changed