It doesn't seem that any talent makes it so. The Brain Freeze extra effect with Frost Bomb is also shared by Nether Tempest and Living Bomb.
In addition, as frost we no longer have the specialization bonus of extra frost damage. It is just all magic damage.
Does this mean we are taking whichever is better DPS-wise?
As I frost mage, I would like to be using a Frost Bomb. Not any of the others. Perhaps the developers could remove Nether Tempest and Living Bomb from the Brain Freeze passive?