POSIX_BARRIERS

Enable this option group with CONFIG_POSIX_BARRIERS.

POSIX_BARRIERS
API	Supported
`pthread_barrier_destroy()`	yes
`pthread_barrier_init()`	yes
`pthread_barrier_wait()`	yes
`pthread_barrierattr_destroy()`	yes
`pthread_barrierattr_getpshared()`	yes
`pthread_barrierattr_init()`	yes
`pthread_barrierattr_setpshared()`	yes