audiopolicy: Convert some of .mk files to .bp files

- Renamed libaudiopolicyengineconfig to libaudiopolicyengine_config
  in order to match names libaudiopolicyengine_{common|interface}.

- Made libaudiopolicyengine_config static to avoid .so overhead.

- Added a cleanspec for it.

- Added libaudiopolicyengine_common which includes source files
  previously included directly into engineconfigurable and
  enginedefault libraries.

Bug: 121208203
Test: make & flash crosshatch
Change-Id: If3b7b89fcbd5752ddfdeca6c164a88f55bc35811
diff --git a/services/audiopolicy/engine/config/Android.bp b/services/audiopolicy/engine/config/Android.bp
new file mode 100644
index 0000000..6e72f2a
--- /dev/null
+++ b/services/audiopolicy/engine/config/Android.bp
@@ -0,0 +1,31 @@
+cc_library_static {
+    name: "libaudiopolicyengine_config",
+    export_include_dirs: ["include"],
+    include_dirs: [
+        "external/libxml2/include",
+        "external/icu/icu4c/source/common",
+    ],
+    srcs: [
+        "src/EngineConfig.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wextra",
+    ],
+    shared_libs: [
+        "libmedia_helper",
+        "libandroidicu",
+        "libxml2",
+        "libutils",
+        "liblog",
+        "libcutils",
+    ],
+    static_libs: [
+        "libaudiopolicycomponents",
+    ],
+    header_libs: [
+        "libaudio_system_headers",
+        "libaudiopolicycommon",
+    ],
+}