[Offload] Store kernel name in GenericKernelTy (#142799)

GenericKernelTy has a pointer to the name that was used to create it.
However, the name passed in as an argument may not outlive the kernel.
Instead, GenericKernelTy now contains a std::string, and copies the
name into there.

offload/plugins-nextgen/common/include/PluginInterface.h

@@ -317,7 +317,7 @@ struct GenericKernelTy {
                            AsyncInfoWrapperTy &AsyncInfoWrapper) const = 0;
 
   /// Get the kernel name.
-  const char *getName() const { return Name; }
+  const char *getName() const { return Name.c_str(); }
 
   /// Get the kernel image.
   DeviceImageTy &getImage() const {
@@ -413,7 +413,7 @@ private:
   }
 
   /// The kernel name.
-  const char *Name;
+  std::string Name;
 
   /// The image that contains this kernel.
   DeviceImageTy *ImagePtr = nullptr;

offload/plugins-nextgen/common/src/PluginInterface.cpp

@@ -456,7 +456,7 @@ Error GenericKernelTy::init(GenericDeviceTy &GenericDevice,
     KernelEnvironment = KernelEnvironmentTy{};
     DP("Failed to read kernel environment for '%s' Using default Bare (0) "
        "execution mode\n",
-       Name);
+       getName());
   }
 
   // Max = Config.Max > 0 ? min(Config.Max, Device.Max) : Device.Max;