Update notes for submitted changes

* ARM: Use -mcpu=cortex-a15 when targeting MSM Krait CPUs
* jbd2: optimize jbd2_journal_force_commit
* vfs: dcache: fix deadlock in tree traversal
* ext4: speed up truncate/unlink by not using bforget() unless needed
* writeback: fix race that cause writeback hung
* ext4: fix memory leak in xattr
* jbd2: don't BUG but return ENOSPC if a handle runs out of space
* cpuidle: make a single register function for all
* sync: signal pt before sync_timeline object gets destroyed
* sync: Fix a race condition between release_obj and print_obj
* Revert "mm: panic on the first bad page table entry access"