qdsp5: audio: Move preproc functionality to audio preproc driver

Move audio pre processing functionalities to audpreproc driver.
and added new functions to get and set current recording
session information. Other drivers can use these functions
to get recording session information.

Change-Id: I9ee58aae554436b88b19a5f06f32f5c2e2549c45
Signed-off-by: Manish Dewangan <manish@codeaurora.org>