Pour pan drippings through strainer into 2-cup measuring cup. Discard solids. Add broth or water to measure 2 cups, if necessary. In 2-quart saucepan, mix flour and cold water with whisk. Stir in pan drippings. Cook over medium-high heat 6 to 7 minutes, stirring frequently, until thickened. Serve pork with gravy. Sprinkle with thyme sprigs.