Fix warnings in bitrotted module

Test: builds
Change-Id: Ib94f78f7baffbc63cff708ca5d81233618f30015
diff --git a/media/libstagefright/codecs/aacenc/SoftAACEncoder.cpp b/media/libstagefright/codecs/aacenc/SoftAACEncoder.cpp
index 1457242..e16ea33 100644
--- a/media/libstagefright/codecs/aacenc/SoftAACEncoder.cpp
+++ b/media/libstagefright/codecs/aacenc/SoftAACEncoder.cpp
@@ -337,7 +337,7 @@
     // We call this whenever sample rate, number of channels or bitrate change
     // in reponse to setParameter calls.
 
-    ALOGV("setAudioParams: %lu Hz, %lu channels, %lu bps",
+    ALOGV("setAudioParams: %u Hz, %u channels, %u bps",
          mSampleRate, mNumChannels, mBitRate);
 
     status_t err = setAudioSpecificConfigData();
@@ -387,12 +387,12 @@
     int32_t index;
     status_t err = getSampleRateTableIndex(mSampleRate, index);
     if (err != OK) {
-        ALOGE("Unsupported sample rate (%lu Hz)", mSampleRate);
+        ALOGE("Unsupported sample rate (%u Hz)", mSampleRate);
         return err;
     }
 
     if (mNumChannels > 2 || mNumChannels <= 0) {
-        ALOGE("Unsupported number of channels(%lu)", mNumChannels);
+        ALOGE("Unsupported number of channels(%u)", mNumChannels);
         return UNKNOWN_ERROR;
     }
 
@@ -403,7 +403,7 @@
     return OK;
 }
 
-void SoftAACEncoder::onQueueFilled(OMX_U32 portIndex) {
+void SoftAACEncoder::onQueueFilled(OMX_U32 /*portIndex*/) {
     if (mSignalledError) {
         return;
     }