Merge branches 'master-arm-multi_pmu_v2', 'master-config-fragments', 'master-hw-bkpt-fix', 'master-misc-patches' and 'master-task-placement-v2-updates' into big-LITTLE-MP-master-v19big-LITTLE-MP-master-v19

Updates:
 -------
 - Rebased over 3.10 final
 - Differences from big-LITTLE-MP-master-v18
   - New Patches:
     - master-config-fragments: 1 new patch
       - "config: Disable priority filtering for HMP Scheduler"
     - master-misc-patches: 1 new patch
       - "mm: make vmstat_update periodic run conditional"
   - New Branches:
     - master-task-placement-v2-updates: 7 patches
       New patches from ARM added in a new topic branch stacked on top
       of master-task-placement-v2-sysfs...
       - Revert "sched: Enable HMP priority filter by default"
       - "HMP: Use unweighted load for hmp migration decisions"
       - "HMP: Select least-loaded CPU when performing HMP Migrations"
       - "HMP: Avoid multiple calls to hmp_domain_min_load in fast path"
       - "HMP: Force new non-kernel tasks onto big CPUs until load stabilises"
       - "sched: Restrict nohz balance kicks to stay in the HMP domain"
       - "HMP: experimental: Force all rt tasks to start on little domain."

 Commands used for merge:
 -----------------------
 $ git checkout -b big-LITTLE-MP-master-v19 v3.10
 $ git merge master-arm-multi_pmu_v2 master-config-fragments \
     master-hw-bkpt-fix master-misc-patches master-task-placement-v2 \
     master-task-placement-v2-sysfs master-task-placement-v2-updates