Spiced pumpkin waffles are a great way to bring the flavor of Autumn to your breakfast or brunch.   To begin, in a bowl, combine 2 1/2 cups of all-purpose flour, 2 1/4 teaspoons of baking powder, a teaspoon of baking soda, 1/2 teaspoon of salt, 2 teaspoons cinnamon, 1/2 teaspoon nutmeg, 1/2 teaspoon ginger