CRAS: Fix pthread_barrier_init call.
CRAS: Fix pthread_barrier_init call.

Call with the correct number of threads.

BUG=none.
TEST=build and run on lumpy.

Change-Id: I54445a5383412786a6a6e16c516b9a8b8f1a0a2a
Signed-off-by: Dylan Reid <c791bfe44996c1eed9c7149a0c5f12a86d58eb85@chromium.org>

drinkcat/adhd,drinkcat/adhd,drinkcat/adhd,drinkcat/adhd,drinkcat/adhd,drinkcat/adhd