A smartphone with a displayed Arm Ltd logo is placed on a computer motherboard in this illustration taken March 6, 2023. REUTERS/Dado Ruvic/Illustration/File photo NEW YORK, Aug 13 (Reuters) – SoftBank Group Corp (9984.T) is in talks to acquire the 25% stake in Arm Ltd it does not directly own from Vision Fund 1 (VF1), a $100 billion investment fund it raised in 2017, according to people familiar with the matter, potentially delivering a win for investors who have waited years for strong returns. The discussions come as Softbank is preparing to list the chip designer on Nasdaq next month…