Heat a Dutch oven coated with cooking spray over medium-high heat. Add pork; cook 4 minutes or just until pork begins to brown, stirring constantly. Remove pork from pan; set aside.
Place pan over medium heat. Recoat pan with cooking spray. Add onion and garlic; sauté 3 minutes. Add chili powder; cook 15 seconds. Add pork and broth; bring to a boil. Cover, reduce heat, and simmer 30 minutes. Add hominy, cumin, and salt; simmer, uncovered, 20 minutes. Ladle soup into bowls, and sprinkle with fresh cilantro.