* If AUDIOHW_MUTE_ON_PAUSE, no meaningful change
* Unconditionally unmute on playback start
* xduoox3ii: Mute on sample rate change
* rocker/xduoo: Stay muted after startup
This avoids the nasty "pop" on startup, without doing
the full mute-on-pause stuff that causes unacceptable
dropouts on the X3ii.
Change-Id: I2e3ee0bb8094e288f37a0acada86a80016ce5cac
* xduoo x3ii/x20: Better line out support
* less granular volume settings (too many steps before)
* Better handling of swiching sample rates
* Log actual sample rate in debug menu
Most credit goes to Roman Stolyarov
Additional integration [re]work by myself
Change-Id: I63af3740678cf2ed3170f61534e1029c81826bb6