kernel security and bug fix update

[2.6.32-642.3.1]

• [infiniband] security: Restrict use of the write interface (Don Dutile) [1332547 1332548] {CVE-2016-4565}
  [2.6.32-642.2.1]
• [sched] Revert ‘kernel: sched: Cure load average vs NO_HZ woes’ (Rafael Aquini) [1343015 1326373]
• [sched] Revert ‘kernel: sched: Cure more NO_HZ load average woes’ (Rafael Aquini) [1343015 1326373]
• [sched] Revert ‘kernel: sched: Move sched_avg_update to update_cpu_load’ (Rafael Aquini) [1343015 1326373]
• [sched] Revert ‘kernel: sched: Fix nohz load accounting – again’ (Rafael Aquini) [1343015 1326373]
• [fs] lockd: Don’t try to register/unregister callbacks on the inet6addr_chain if the ipv6 module isn’t loaded (Scott Mayhew) [1341496 1336483]
• [fs] nfsd: Don’t try to register/unregister callbacks on the inet6addr_chain if the ipv6 module isn’t loaded (Scott Mayhew) [1341496 1336483]
• [isdn] avoid calling tty_ldisc_flush() in atomic context (Sabrina Dubroca) [1337443 1328115]
• [redhat] Update dracut dependency to pull in ecb module (Herbert Xu) [1334431 1315832]