Intel's official intel on the acquisition: Intel to Acquire McAfee
It will be good for Intel. They are looking at the growth in the mobile market's need for this type of product. If they can incorporate this into the hardware for the cloud and push it off, as, a plus over the other chip makers (ARM, etc.) chips. Mobile market is getting to be dog eat dog and the dog with the best bite wins. Every little marketing tool helps.
McAfee is a profitable company and has seen growth over the years, so it is not a bad investment on Intel's part.
It is just my opinion.