[SYCL] Move Subgroup*INTEL SPIR-V built-in declarations to clang SPIRVBuiltins.td#17732

steffenlarsen merged 7 commits intointel:syclintel/llvm:syclfrom

wenju-he:move-intel-subgroup-builtin-to-SPIRVBuiltins.tdwenju-he/llvm:move-intel-subgroup-builtin-to-SPIRVBuiltins.tdCopy head branch name to clipboard