audiohal: Prevent logspam when calling get_presentation_position

get_presentation_position can return ENODATA if the stream
has stopped but the write is still querying the position.

Bug: 38376424
Change-Id: I9d516a19fb347843a8ec8e8e9a0f5eab0b0798e6
Test: no log messages from StreamHAL about get_presentation_position