[oneMKL][RNG] Issues with device API

[andreyfe1]

It doesn't make sense to keep constructors with std::initializer_list for mcg31m1 and mcg59 random generators since one seed value is enough. Size of the state for mcg31m1 is 31 bits, uint32_t is enough to store the initial state. For mcg59 size is 59 bits, uint64_t is enough. So, I'd keep only std::uint32_t seed for mcg31m1 and std::uint64_t seed for mcg59.

PR with bug fixes is here: #525.

Feel free to provide your feedback.