[HDx] - Fix scan problem of USB Tuner.

- Change Keymap of xpeedlx and miraclebox.

           : >|| key ( KEY_PLAY -> KEY_PLAYPAUSE)

           : PIP key ( KEY_ZOOM -> KEY_SCREEN)

- Fix playback problem of some media files.
Merge branch 'master' of https://github.com/oe-alliance/oe-alliance-core