Update notes for submitted changes

* cpufreq: interactive: Optimize sync_freq implementation
* cpufreq: interactive: Remove unnecessary cpu_online() check
* cpufreq: interactive: Don't reset sampling down factor at max freq
* cpufreq: cpu-boost: Readd missing bits
* cpufreq: cpu-boost: Re-issue boosts above minimum frequency
* cpufreq: Sync on thread migration optimizations
* cpufreq: cpu-boost: Remove unused waitqueue
* cpufreq: cpu-boost: Fix queue_delayed_work_on() race with hotplug
* cpufreq: cpu-boost: Use hotplug thread infrastructure
* cpufreq: squashed cpu-boost reverts
* softirq: Use hotplug thread infrastructure
* update kthread
* update smpboot