drm/amdkfd: match the signatures of the real and stub kgd2kfd_probe()

When CONFIG_HSA_AMD=n this there is this error
amdgpu_amdkfd.c:75:56: error: incompatible type for
  argument 2 of ‘kgd2kfd_probe’
   75 |  adev->kfd.dev = kgd2kfd_probe((struct kgd_dev *)adev, vf);

amdgpu_amdkfd.h:349:17: note: declared here
  349 | struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd,
  struct pci_dev *pdev,

The signature of the stub kgd2kfd_probe() does not match the real one.
So change the stub to match.

Fixes: 920f37e ("drm/amdkfd: clean up parameters in kgd2kfd_probe")
Signed-off-by: Tom Rix <trix@redhat.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

@@ -346,8 +346,7 @@ static inline void kgd2kfd_exit(void)
 }
 
 static inline
-struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev,
-					unsigned int asic_type, bool vf)
+struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, bool vf)
 {
 	return NULL;
 }