Kourtney Kardashian and Travis Barker have asked police to step up patrols near their house. The couple – who own multiple properties across Southern California – reportedly contacted law enforcement services earlier in the week asking them to keep a closer eye on their marital abode. Sources told TMZ the pair had made the request due to past trespassers who have made their way into their grounds, though there isn’t a specific current threat they are concerned about. Instead, Kourtney and Travis hope the additional police visibility will act as a deterrent. Police told the outlet that anyone c…