DeepMind co-founder Mustafa Suleyman Greylock Partners Inflection AI, the new artificial intelligence start-up from DeepMind co-founder Mustafa Suleyman and LinkedIn co-founder Reid Hoffman, has secured $225 million in funding, according to a filing with the US Securities and Exchange Commission last week. The funding, first reported by TechCrunch, has been raised at an undisclosed valuation…