Merge "Add a priority constant in to the graphics HAL header"

__BEGIN_DECLS

/*

 * If the HAL needs to create service threads to handle graphics related

 * tasks, these threads need to run at HAL_PRIORITY_URGENT_DISPLAY priority

 * if they can block the main rendering thread in any way.

 *

 * the priority of the current thread can be set with:

 *

 *      #include <sys/resource.h>

 *      setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);

 *

 */

#define HAL_PRIORITY_URGENT_DISPLAY     (-8)

/**

 * pixel format definitions

 */