Added mediautils_headers

Test: make mediautils_headers
Bug: 202897137

Change-Id: I1ca5871c3b282856cf8edbe2e1666f5e7d91c5bf
(cherry picked from commit 467d396fa7be2177f67c05b051e7ee09f778a72d)
diff --git a/media/utils/Android.bp b/media/utils/Android.bp
index 7abb0b6..07dac5e 100644
--- a/media/utils/Android.bp
+++ b/media/utils/Android.bp
@@ -179,3 +179,8 @@
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
 }
+
+cc_library_headers {
+    name: "mediautils_headers",
+    export_include_dirs: ["include", "."],
+}