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/services/audioflinger/Android.mk b/services/audioflinger/Android.mk
index 2222e8b..75d24a1 100644
--- a/services/audioflinger/Android.mk
+++ b/services/audioflinger/Android.mk
@@ -10,6 +10,9 @@
     AudioResamplerCubic.cpp.arm \
     AudioPolicyService.cpp
 
+LOCAL_C_INCLUDES := \
+    system/media/audio_effects/include
+
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
     libutils \