msm: soc: Cleanup of audio driver

dsp_debug.c file should have been deprecated as part of file migration,
since new platforms don't support this feature.Change removes the file and
corrects config dependency for msm_audio_ion file

Change-Id: I8fff2ac555d39078186cfcd4cd5ac0da8e69fd35
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>