They are just OEM Tektros, no reason why they can't be adjusted, by using the conical washer which all of that type of brake are fitted with, but how much toe in do you need with Dual Pivot brakes? normally with DP's you don't run any.

(To clarify, as per CACycling below with the adjustment, the conical washers I mentioned are on the pad fittings)

If you are looking the bike, budget to replace the pads (non-cartridge type), as this is the biggest weakness of Tektro brakes