Resolve conflicts for functions introduced in Android API level 30. * doc/glibc-functions/memfd_create.texi: Mention the Android API levels. * doc/glibc-functions/mlock2.texi: Likewise. * doc/glibc-functions/pthread_cond_clockwait.texi: Likewise. * doc/glibc-functions/pthread_mutex_clocklock.texi: Likewise. * doc/glibc-functions/pthread_rwlock_clockrdlock.texi: Likewise. * doc/glibc-functions/pthread_rwlock_clockwrlock.texi: Likewise. * doc/glibc-functions/renameat2.texi: Likewise. * doc/glibc-functions/sem_clockwait.texi: Likewise. * doc/glibc-functions/statx.texi: Likewise.