By Oliver Hirt ZURICH (Reuters) – Credit Suisse is in the early stages of weighing options to bolster its capital after a string of losses have eroded its financial buffers, two people with knowledge of the matter told Reuters. The size of the increase would be likely to exceed 1 billion Swiss francs ($1.04 billion), but this has not yet been determined, said one of the people, who declined to be named because the deliberations are still internal. The cash injection would help Switzerland’s second-biggest bank to recover from billions of losses in 2021 and a series of costly legal headaches. S…