Move equalizer header file to Equalizer folder

Bug: 255361653
Test: atest VtsHalAudioEffectTargetTest
atest VtsHalAudioEffectFactoryTargetTest
atest VtsHalEqualizerTargetTest

Change-Id: Ic1f9dedd35ec6cb0c1753106bdd5530f572d31ff
diff --git a/audio/aidl/default/equalizer/Android.bp b/audio/aidl/default/equalizer/Android.bp
index 69d7450..8de6b1a 100644
--- a/audio/aidl/default/equalizer/Android.bp
+++ b/audio/aidl/default/equalizer/Android.bp
@@ -31,7 +31,7 @@
         "latest_android_hardware_audio_effect_ndk_shared",
     ],
     srcs: [
-        "Equalizer.cpp",
+        "EqualizerSw.cpp",
         ":effectCommonFile",
     ],
     visibility: [