Update notes for submitted changes

* hal: Support for FLAC 24 bit format in offload path
Update notes for submitted changes

* Audio: Fix for sound card status overwrite issue
Update notes for submitted changes

* hal: add support for pcm_ioctl() api
Update notes for submitted changes

* policy: Add support for multiple instances of offload playback
Update notes for submitted changes

* hal: Add multiple offload support for msm8974