tinyalsa: Add support for mmap ops

Bug: 166482201
Test: audio smoke tests

Change-Id: I22a32a3aab02e56af1e6ae901de65e86a94d6196
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
5 files changed