(Reuters) - Qualcomm Inc forecast second-quarter revenue largely above Wall Street estimates on Wednesday, in the latest sign that a protracted slowdown in the global chip industry has bottomed out. Shares of the company, the world's biggest supplier of mobile phone chips, were up more than 1% in after-hours trading. The above-estimates forecast comes weeks after chipmakers Intel Corp and Texas Instruments calmed investor nerves with their upbeat annual forecasts. Analysts view 2020 as a..