Volume rocker from AOSPA

(1/2) Volume Rocker:
https://github.com/AOSPA/android_frameworks_base/commit/5898c3bed5ceb453b71f08ae20ea6d6dde928855#diff-82378faf2a467d2f28e834dddd59207eR4352

"""
* Volume rocker wake
* Volume rocker music control
"""

Volume Rocker: Switch from Broadcast to Audioservice.:

https://github.com/AOSPA/android_frameworks_base/commit/b2a50bf6a5ad15c4772ce8e17e70bf2c3cd349cf

Volume Rocker: Hardcode music track seek option (1/2).:
https://github.com/AOSPA/android_frameworks_base/commit/3e296057363fa48b69acbccde6c0e22f91b39505

Thanks to the commit authors..