[turbofan] add configuration parameters for register allocator

src/compiler/mips/linkage-mips.cc

Index: src/compiler/mips/linkage-mips.cc
diff --git a/src/compiler/mips/linkage-mips.cc b/src/compiler/mips/linkage-mips.cc
index b9f3fa21c3187ca15182f68a7847987f97a9689f..91fe9c3d5fa8b0d6b99ed69c02f17546d84dca30 100644
--- a/src/compiler/mips/linkage-mips.cc
+++ b/src/compiler/mips/linkage-mips.cc
@@ -49,7 +49,7 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
 
 
 CallDescriptor* Linkage::GetStubCallDescriptor(
-    CallInterfaceDescriptor descriptor, int stack_parameter_count,
+    const CallInterfaceDescriptor& descriptor, int stack_parameter_count,
     CallDescriptor::Flags flags, Zone* zone) {
   return LH::GetStubCallDescriptor(zone, descriptor, stack_parameter_count,
                                    flags);