audiohal: Do not log if EINVAL is received from get_presentation_position

This happens often, and it's normal. Avoid logging it down as this
causes logspam.

Bug: 33353073
Change-Id: Ia3b1b8af61bdf83e9bcde0e5bed0285af037df45
Test: cause the system to play some sounds (e.g. UI clicks), watch logcat