Added an overload to SKSwizzle

binding/Binding/SKSwizzle.cs

@@ -13,6 +13,11 @@ namespace SkiaSharp
 {
 	public static class SKSwizzle
 	{
+		public static void SwapRedBlue (IntPtr pixels, int count)
+		{
+			SwapRedBlue (pixels, pixels, count);
+		}
+
 		public static void SwapRedBlue (IntPtr dest, IntPtr src, int count)
 		{
 			if (dest == IntPtr.Zero) {