update makefile for test effect libraries

Convert .mk makefile to .bp in test effect libraries
(media/libeffects/testlibs) and fix build errors.

Test: make
Change-Id: I53e90c86550ab2a1351335d355ebf8989571fb1d
diff --git a/media/libeffects/testlibs/EffectEqualizer.cpp b/media/libeffects/testlibs/EffectEqualizer.cpp
index db4d009..72b530d 100644
--- a/media/libeffects/testlibs/EffectEqualizer.cpp
+++ b/media/libeffects/testlibs/EffectEqualizer.cpp
@@ -131,7 +131,8 @@
                             int32_t ioId,
                             effect_handle_t *pHandle) {
     int ret;
-    int i;
+    (void)sessionId;
+    (void)ioId;
 
     ALOGV("EffectLibCreateEffect start");
 
@@ -160,7 +161,7 @@
     pContext->state = EQUALIZER_STATE_INITIALIZED;
 
     ALOGV("EffectLibCreateEffect %p, size %d",
-         pContext, AudioEqualizer::GetInstanceSize(kNumBands)+sizeof(EqualizerContext));
+         pContext, (int)(AudioEqualizer::GetInstanceSize(kNumBands)+sizeof(EqualizerContext)));
 
     return 0;
 
@@ -294,7 +295,6 @@
 
 int Equalizer_init(EqualizerContext *pContext)
 {
-    int status;
 
     ALOGV("Equalizer_init start");
 
@@ -630,7 +630,6 @@
         void *pCmdData, uint32_t *replySize, void *pReplyData) {
 
     android::EqualizerContext * pContext = (android::EqualizerContext *) self;
-    int retsize;
 
     if (pContext == NULL || pContext->state == EQUALIZER_STATE_UNINITIALIZED) {
         return -EINVAL;
@@ -750,13 +749,13 @@
         NULL
 };
 
-
+__attribute__ ((visibility ("default")))
 audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM = {
-    tag : AUDIO_EFFECT_LIBRARY_TAG,
-    version : EFFECT_LIBRARY_API_VERSION,
-    name : "Test Equalizer Library",
-    implementor : "The Android Open Source Project",
-    create_effect : android::EffectCreate,
-    release_effect : android::EffectRelease,
-    get_descriptor : android::EffectGetDescriptor,
+    .tag = AUDIO_EFFECT_LIBRARY_TAG,
+    .version = EFFECT_LIBRARY_API_VERSION,
+    .name = "Test Equalizer Library",
+    .implementor = "The Android Open Source Project",
+    .create_effect = android::EffectCreate,
+    .release_effect = android::EffectRelease,
+    .get_descriptor = android::EffectGetDescriptor,
 };