Move libmediahelper into a new folder.

This change mainly aims at refactoring libmediahelper. Libmediahelper
doesn't need to be stored in media folder. In that case, move
libmediahelper related file to a new folder. In the meantime, move
AudioParameter.h from libaudioclient to libmediahelper. There is no
need to keep AudioParameter.h in libaudioclient while AudioParameter.cpp
is in libmediahelper.

Test: make
Bug: 135621476
Change-Id: Icce6615b7e3a68be8b7492f2a91922ab04464ca2
Merged-In: Icce6615b7e3a68be8b7492f2a91922ab04464ca2
diff --git a/media/libaudiofoundation/Android.bp b/media/libaudiofoundation/Android.bp
index 3cc0e2d..72b2f2b 100644
--- a/media/libaudiofoundation/Android.bp
+++ b/media/libaudiofoundation/Android.bp
@@ -4,13 +4,11 @@
     export_include_dirs: ["include"],
     header_libs: [
         "libaudio_system_headers",
-        "libaudioclient_headers",
-        "libmedia_headers",
+        "libmedia_helper_headers",
     ],
     export_header_lib_headers: [
         "libaudio_system_headers",
-        "libaudioclient_headers",
-        "libmedia_headers",
+        "libmedia_helper_headers",
     ],
 }