Native bindings to the QCOM_driver_control extension.

This extension exposes special control features in a driver to a developer. A use of these controls would be to override state or implement special modes of operation. One common example might be an IFH or infinitely fast hardware mode. In this mode none of draw commands would be sent to the GPU so no image would be displayed, but all the driver software overhead would still happen thus enabling developers to analyze driver overhead separate from GPU performance. Some uses of this extension could invalidate future rendering and thus should only be used by developers for debugging and performance profiling purposes.

The extension is general enough to allow the implementation to choose which controls to expose and to provide a textual description of those controls to developers.