By Patricia Zengerle and David Shepardson WASHINGTON (Reuters) -Voting in the Senate on a bill to boost the U.S. semiconductor industry and improve competitiveness with China could begin as early as Tuesday, Senate Majority Leader Chuck Schumer has been telling lawmakers, a source familiar with the issue said on Thursday. The source said the bill would include, at a minimum, billions of dollars in subsidies for the semiconductor industry and an investment tax credit to boost U.S. manufacturing. Lawmakers hope to pass the legislation and send it to the White House for President Joe Biden to sig…