[gn build] Port d00f65c

Author: llvmgnsyncbot

llvm/utils/gn/secondary/clang/lib/Driver/BUILD.gn

@@ -95,6 +95,7 @@ static_library("Driver") {
     "ToolChains/RISCVToolchain.cpp",
     "ToolChains/SPIRV.cpp",
     "ToolChains/SPIRVOpenMP.cpp",
+    "ToolChains/SYCL.cpp",
     "ToolChains/Solaris.cpp",
     "ToolChains/TCE.cpp",
     "ToolChains/UEFI.cpp",