Move UXX_AT families to libstagefright_foundation

Byte handling utilities moved to libstagefright_foundation so that
they can be used in extractors without depending on libstagefright.

Test: build
Bug: 65851881

Change-Id: Ib4e530563dd8640d3a57456a8fa200012a2129ce
diff --git a/media/jni/android_media_MediaPlayer.cpp b/media/jni/android_media_MediaPlayer.cpp
index 7f6980d..28827e6 100644
--- a/media/jni/android_media_MediaPlayer.cpp
+++ b/media/jni/android_media_MediaPlayer.cpp
@@ -24,7 +24,7 @@
 #include <media/IMediaHTTPService.h>
 #include <media/MediaPlayerInterface.h>
 #include <media/MediaAnalyticsItem.h>
-#include <media/stagefright/Utils.h>            // for FOURCC definition
+#include <media/stagefright/foundation/ByteUtils.h>  // for FOURCC definition
 #include <stdio.h>
 #include <assert.h>
 #include <limits.h>