Prince Harry and Meghan Markle are making plans for her mother, Doria Ragland, to spend plenty of time at their new house in the Montecito area of Santa Barbara, California.“They’re converting one of the guesthouses into a home for Doria, who plans to split her time between L.A. and Montecito,” a source exclusively tells Us Weekly.Harry, 35, and Meghan, 39, initially moved to her hometown of Los Angeles in March after stepping away from the royal family earlier this year.