ais: support field info report to user space

1. send real SOF event to user space per SOF irq;
   original SOF event per:
     CAMIF port: epoch irq
     RDI port: reg_update irq
2. provide interface for user space to query field type;
3. provide frame id from stream_info not src_info for user;

Change-Id: Ied446b81a84d95c7273d1aa3918a474ac739971f
Signed-off-by: Andy Sun <bins@codeaurora.org>