I tried looking up for an answer, but I couldn't find any. For the GTX 1060 that I have is a need to change the motherboard, but I do not know regarding the CPU, hence I hope someone may have an answer.
I'm not quite sure how you are going to add a 1060 to a laptop without using some sort of external GPU, since the GPU in there is part of the motherboard. But to answer your question no, the 7300HQ is soldered to the motherboard.