[clang] [SYCL][Driver] Pass -lsycl by default for SYCL compilation. (PR #174877)

[Michael Toguchi via cfe-commits]

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@@ -7276,6 +7276,10 @@ def fsycl : Flag<["-"], "fsycl">,
   HelpText<"Enable SYCL C++ extensions">;
 def fno_sycl : Flag<["-"], "fno-sycl">,
   HelpText<"Disable SYCL C++ extensions">;
+def nolibsycl : Flag<["-"], "nolibsycl">,
+                Flags<[NoXarchOption]>,
+                Visibility<[ClangOption, CLOption]>,
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mdtoguchi wrote:

Visibility is already set with `sycl_Group`

https://github.com/llvm/llvm-project/pull/174877