MIPS64: Fix '[turbofan] Add an operator to access the parent frame pointer'.

Port fd8fd05c

Original commit message:
This functionality is useful for stubs that need to walk the stack. The new
machine operator, LoadParentFramePointer doesn't force the currently compiling
method to have a frame in contrast to LoadFramePointer. Instead, it adapts
accordingly when frame elision is possible, making efficient stack walks
possible without incurring a performance penalty for small stubs that can
benefit from frame elision.

BUG=

Review URL: https://codereview.chromium.org/1701933003

Cr-Commit-Position: refs/heads/master@{#34066}

src/compiler/mips64/code-generator-mips64.cc

@@ -616,7 +616,7 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       break;
     case kArchParentFramePointer:
       if (frame_access_state()->frame()->needs_frame()) {
-        __ lw(i.OutputRegister(), MemOperand(fp, 0));
+        __ ld(i.OutputRegister(), MemOperand(fp, 0));
       } else {
         __ mov(i.OutputRegister(), fp);
       }