Support sycl_ext_oneapi_prefetch (#2189)
SYCL part: https://github.com/intel/llvm/pull/11458
https://github.com/intel/llvm/pull/11597
Handle new properties and decorate prefetch's arg.
Original commit:
https://github.com/KhronosGroup/SPIRV-LLVM-Translator/commit/a76f24e
