Moved and renamed effect API header files

Moved specific effect header files to
system/media/audio_effects/include/audio_effects
and renamed to lower case (effect_xxx.h).

Change-Id: Icfc2264bfd013cab0395d7e310ada636b9fe3621
diff --git a/media/libeffects/testlibs/EffectEqualizer.cpp b/media/libeffects/testlibs/EffectEqualizer.cpp
index 43dfa82..c2ffce5 100644
--- a/media/libeffects/testlibs/EffectEqualizer.cpp
+++ b/media/libeffects/testlibs/EffectEqualizer.cpp
@@ -26,7 +26,8 @@
 #include "AudioEqualizer.h"
 #include "AudioBiquadFilter.h"
 #include "AudioFormatAdapter.h"
-#include <media/EffectEqualizerApi.h>
+#include <audio_effects/effect_equalizer.h>
+
 
 // effect_handle_t interface implementation for equalizer effect
 extern "C" const struct effect_interface_s gEqualizerInterface;