Adapt to change introduced by #122928 in upstream. (#2965)

Original commit:
KhronosGroup/SPIRV-LLVM-Translator@3c4e7607696f195

Author: AlexVlx

llvm-spirv/lib/SPIRV/SPIRVToLLVMDbgTran.cpp

@@ -330,7 +330,7 @@ DIType *SPIRVToLLVMDbgTran::transTypePointer(const SPIRVExtInst *DebugInst) {
         PointeeTy, BM->getAddressingModel() * 32, 0, AS);
 
   if (Flags & SPIRVDebug::FlagIsObjectPointer)
-    Ty = getDIBuilder(DebugInst).createObjectPointerType(Ty, true);
+    Ty = getDIBuilder(DebugInst).createObjectPointerType(Ty, /*Implicit=*/true);
   else if (Flags & SPIRVDebug::FlagIsArtificial)
     Ty = getDIBuilder(DebugInst).createArtificialType(Ty);