[SYCL] Fix LIT tests to take into account LLVM_LIBDIR_SUFFIX#1227

fwyzard wants to merge 1 commit intointel:syclintel/llvm:syclfrom

fwyzard:fix_SYCL_LIT_test_for_LLVM_LIBDIR_SUFFIXfwyzard/llvm:fix_SYCL_LIT_test_for_LLVM_LIBDIR_SUFFIXCopy head branch name to clipboard