ScaleKernelInfo() scales the given kernel list by the given amount, with or without
   normalization of the sum of the kernel values (as per given flags).

   The exact behaviour of this function depends on the normalization type being used
   please see http://www.imagemagick.org/api/morphology.php#ScaleKernelInfo for details.

   Flag should be one of Imagick::NORMALIZE_KERNEL_VALUE, Imagick::NORMALIZE_KERNEL_CORRELATE,
   Imagick::NORMALIZE_KERNEL_PERCENT or not set.