Audio/Volume: Fix volume button music control

    When music control enabled in volume button settings,

    Case 1 : Wake up device enabled in volume button settings
    - When volume button pressed, the device is wake up and skip the current music.
    - Current music is skipped by short press and volume adjustment only working when screen on.

    Case 2: Wake up device disabled in volume button settings
    - When volume button pressed while screen offed, volume adjustment is not working.
    - Also music control is not working by long press.

    This patch fixes Case 2 issue.
    Music control only working properly when wake up device is disabled.

Change-Id: I91846e0ec76061971d8c437cea54c333e1bfb77b