hybris: egl: deactivate buffer cleanup when all references are gone for now

Until we have cleaned up the whole webOS ports rendering stack to properly use this it's
better to deactivate it.

Signed-off-by: Simon Busch <morphis@gravedo.de>
hybris: install missing ui_compatibility_layer.h header file

Signed-off-by: Simon Busch <morphis@gravedo.de>