Forward parameter options as '-option=parameter'.

Some tools do not like the '-option parameter' form. Should this be
configurable?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96130 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index 2abc94b..5558904 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -1792,8 +1792,8 @@
     O.indent(IndentLevel) << "vec.push_back(\"" << Name << "\");\n";
     break;
   case OptionType::Parameter:
-    O.indent(IndentLevel) << "vec.push_back(\"" << Name << "\");\n";
-    O.indent(IndentLevel) << "vec.push_back(" << D.GenVariableName() << ");\n";
+    O.indent(IndentLevel) << "vec.push_back(\"" << Name << "=\" + "
+                          << D.GenVariableName() << ");\n";
     break;
   case OptionType::Prefix:
     O.indent(IndentLevel) << "vec.push_back(\"" << Name << "\" + "