Warren Buffett’s Berkshire Hathaway has committed to invest US$10 billion in equity in Occidental Petroleum if Occidental completes its proposed acquisition of Anadarko, Occidental said on Tuesday, a day after Anadarko said that it would resume talks with Occidental despite having agreed to a deal with Chevron. Contingent upon Occidental completing the acquisition of Anadarko, Berkshire Hathaway will receive 100,000 shares of Cumulative Perpetual Preferred Stock with a liquidation value of US$100,000 per share, together with a warrant to…