[FM]There is no sound output from BT earphone while BT earphone is connected

    Bug: 18847131

    Review: https://partner-android-review.git.corp.google.com/#/c/193318



    Signed-off-by: Hochi Huang <hochi.huang@mediatek.com>

Change-Id: I79703ba4ceb67ca3b95fbc71444dd3b116ba4131