【原创】FM audio path from LineIn

To configure the FM audio path form Lin_in on QSC11X0 platform , the function "snd_set_aux_line_in" must be called.  Also, the API “snd_set_device”  must be called to set  appropriate sound device first,  it only supports the Bluetooth headset, Wired Stereo Headset or Speakerphone when selecting the Line-In input.