audio/msm7630: Fix the issue of voice call when HDMI connected

- Voice call is not working when HDMI cable is connected.
- When HDMI is connected getDeviceForStrategy is picking
  up HDMI rx as active device, because of this voice call
  is not working.
- Avoid updating the HDMI as active output device, when
  strategy is STRATGY_PHONE.

(cherry picked from commit 93bc81a7cd494373c19e5611fed060732a14b31b)

Change-Id: I74be601f771883d9dfecc751994a4068acaf2d03