PPC: Add missing declaration

R=joransiu@ca.ibm.com

Change-Id: I071409177a0a33ad90c38c787d867461be5085a9
Reviewed-on: https://chromium-review.googlesource.com/c/1302802Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#57097}

src/ppc/macro-assembler-ppc.h

@@ -295,6 +295,9 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
   void SaveRegisters(RegList registers);
   void RestoreRegisters(RegList registers);
 
+  void CallRecordWriteStub(Register object, Register address,
+                           RememberedSetAction remembered_set_action,
+                           SaveFPRegsMode fp_mode);
   void CallRecordWriteStub(Register object, Register address,
                            RememberedSetAction remembered_set_action,
                            SaveFPRegsMode fp_mode, Address wasm_target);