Fix autotest-deps sox dependency compile error in tegra2.

BUG=None
TEST=Add sox to autotest-deps list then emerge-tegra2_kaen success.

Change-Id: Ifd4809372ab37e482bb21548614e2b62fa2215e9
Reviewed-on: https://gerrit.chromium.org/gerrit/12490
Tested-by: Hsinyu Chao <hychao@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Ready: Hsinyu Chao <hychao@chromium.org>
1 file changed