Do not disable voice call route on adev_open

This tries to correct bug:
- Mic does not work immediately after a new start / reboot

i9300: audio: properly set routing and standby after voice call

Disabling the voice call route using voicecall_default_disable is not
sufficient since there are additional routes which are used during a
voice call, which have to be properly disabled. Also, set the input
device to standy which prevents the mic from not working for the
first time after a voice call.
This could also serve a potential fix for battery drain issues after
voice call.

Do not disable voice call route on adev_open

This tries to correct bug:
- Mic does not work immediately after a new start / reboot

Change-Id: I75bf53479a886805ae33bc03c1342b6320f6add4