linux-yocto/3.14: KASLR and VDSO backports

linux-yocto/3.14: KASLR and VDSO backports

Updating the 3.14 linux-yocto SRCREVs for feature backports:

   6cfe9c448741 x86, kaslr: boot-time selectable with hibernation
   881a5f5812fd x86, kaslr: fix module lock ordering problem
   121ec40d905d x86, kaslr: randomize module base load address
   6efd2d21273c x86, vdso: Add 32 bit VDSO time support for 64 bit kernel
   642441e17072 x86, vdso: Add 32 bit VDSO time support for 32 bit kernel
   1d8dd2e617d4 x86, vdso: Patch alternatives in the 32-bit VDSO
   353f3eadb16d x86, vdso: Introduce VVAR marco for vdso32
   5e6e6ec6eb5c x86, vdso: Cleanup __vdso_gettimeofday()
   91efa61ed6c2 x86, vdso: Replace VVAR(vsyscall_gtod_data) by gtod macro
   f9c259ee1b2f x86, vdso: __vdso_clock_gettime() cleanup
   63d9b1c4ec72 x86, vdso: Revamp vclock_gettime.c
   e3a8ed44c964 mm: Add new func _install_special_mapping() to mmap.c
   02a67e32e58d x86, vdso: Make vsyscall_gtod_data handling x86 generic
   d076cfb68504 x86, vdso, xen: Remove stray reference to FIX_VDSO
   949153696c99 x86_32, mm: Remove user bit from identity map PDE
   e5cf7dfec74d x86, vdso: Remove compat vdso support

(From OE-Core rev: 00dcb084682b7599f2a3e69dcb4978cbb38f5c58)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>