Improve portability beyond Android

libaudioutils has some modules with many explicit Android dependencies /
assumptions, and other modules that are portable beyond Android (or are
close to it, such as only needing <system/audio.h>).  Currently there
is no clear separation between these two kinds of modules.

This CL is a first step towards distinguishing the portable vs
non-portable modules: we remove Android-based logging from modules that
don't really need that logging.

Test: builds OK in non-Android environments, such as gcov test coverage
Change-Id: I2a8db53bc4608fa8ab88602776104b6598da8337
4 files changed