Trusty CVE-2016-5696

[Tim Gardner]

In fact, how about this 4 patch set. the first 3 are clean cherry-picks, but required to provide
the inline macros upon which the real fix depends.

[PATCH 1/4] kernel: Provide READ_ONCE and ASSIGN_ONCE
[PATCH 2/4] kernel: Change ASSIGN_ONCE(val, x) to WRITE_ONCE(x, val)
[PATCH 3/4] random32: add prandom_u32_max and convert open coded
[PATCH 4/4] tcp: make challenge acks less predictable


rtg