[source] Apply input source during routing if source is defined. Contributes to JB#25679
[source] Apply input source during routing if source is defined. Contributes to JB#25679

When changing input device routing check for default input source for
given device. If default input source is found apply that as well in the
set_parameters() call. Some HAL implementations require
AUDIO_PARAMETER_STREAM_INPUT_SOURCE be set in order to get working input
route.

ballock/pulseaudio-modules-droid,ballock/pulseaudio-modules-droid,mer-hybris/pulseaudio-modules-droid,jusa/pulseaudio-modules-droid,mer-hybris/pulseaudio-modules-droid,mlehtima/pulseaudio-modules-droid,mlehtima/pulseaudio-modules-droid,jusa/pulseaudio-modules-droid