libaudioprocessing: Trivial dependency cleanups

- Remove unused dependencies on libnbaio and libnblog;

- Move dependencies on libaudiohal and libsonic to libaudioprocessing
  as AudioMixer implementation does not use them.

Test: make
Change-Id: I258a450725bdacb4fcf437b6f86582d51d40e622
diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index c5b9953..3eacc8c 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -105,13 +105,8 @@
     return mSQ.poll();
 }
 
-void FastMixer::setNBLogWriter(NBLog::Writer *logWriter)
+void FastMixer::setNBLogWriter(NBLog::Writer *logWriter __unused)
 {
-    // FIXME If mMixer is set or changed prior to this, we don't inform correctly.
-    //       Should cache logWriter and re-apply it at the assignment to mMixer.
-    if (mMixer != NULL) {
-        mMixer->setNBLogWriter(logWriter);
-    }
 }
 
 void FastMixer::onIdle()
diff --git a/services/audioflinger/FastThread.cpp b/services/audioflinger/FastThread.cpp
index 04b32c2..8b7a124 100644
--- a/services/audioflinger/FastThread.cpp
+++ b/services/audioflinger/FastThread.cpp
@@ -124,7 +124,7 @@
             mDumpState = next->mDumpState != NULL ? next->mDumpState : mDummyDumpState;
             tlNBLogWriter = next->mNBLogWriter != NULL ?
                     next->mNBLogWriter : mDummyNBLogWriter.get();
-            setNBLogWriter(tlNBLogWriter); // FastMixer informs its AudioMixer, FastCapture ignores
+            setNBLogWriter(tlNBLogWriter); // This is used for debugging only
 
             // We want to always have a valid reference to the previous (non-idle) state.
             // However, the state queue only guarantees access to current and previous states.