[SYCL] Remove std header inclusion from kernel_desc.hpp and use template proxy for int64_t#6444

againull merged 4 commits intointel:syclintel/llvm:syclfrom

cperkinsintel:cperkins-potential-fix-for-onedpl-conflictcperkinsintel/llvm:cperkins-potential-fix-for-onedpl-conflictCopy head branch name to clipboard