mixer_paths: Switch the input ADC for voice-speaker-mic

Change-Id: I47c0a9972b80920927cbe9ff761f06633dddc40b
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_lge_e980 into pac-4.4

* 'cm-11.0' of https://github.com/CyanogenMod/android_device_lge_e980:
  mixer_paths: Switch the input ADC for voice-speaker-mic