[clang] Use llvm::find (NFC)

clang/lib/Driver/ToolChains/Arch/CSKY.cpp

@@ -99,7 +99,7 @@ getCSKYFPUFeatures(const Driver &D, const Arg *A, const ArgList &Args,
   auto RemoveTargetFPUFeature =
       [&Features](ArrayRef<const char *> FPUFeatures) {
         for (auto FPUFeature : FPUFeatures) {
-          auto it = std::find(Features.begin(), Features.end(), FPUFeature);
+          auto it = llvm::find(Features, FPUFeature);
           if (it != Features.end())
             Features.erase(it);
         }

clang/lib/Tooling/ArgumentsAdjusters.cpp

@@ -122,7 +122,7 @@ ArgumentsAdjuster getInsertArgumentAdjuster(const CommandLineArguments &Extra,
 
     CommandLineArguments::iterator I;
     if (Pos == ArgumentInsertPosition::END) {
-      I = std::find(Return.begin(), Return.end(), "--");
+      I = llvm::find(Return, "--");
     } else {
       I = Return.begin();
       ++I; // To leave the program name in place