drm/amdkfd: Unify multiple calls to pr_debug() into one

Signed-off-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>

drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c

@@ -142,13 +142,15 @@ int kfd_doorbell_mmap(struct kfd_process *process, struct vm_area_struct *vma)
 
 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 
-	pr_debug("mapping doorbell page:\n");
-	pr_debug("     target user address == 0x%08llX\n",
-			(unsigned long long) vma->vm_start);
-	pr_debug("     physical address    == 0x%08llX\n", address);
-	pr_debug("     vm_flags            == 0x%04lX\n", vma->vm_flags);
-	pr_debug("     size                == 0x%04lX\n",
-			 doorbell_process_allocation());
+	pr_debug("kfd: mapping doorbell page in %s\n"
+		 "     target user address == 0x%08llX\n"
+		 "     physical address    == 0x%08llX\n"
+		 "     vm_flags            == 0x%04lX\n"
+		 "     size                == 0x%04lX\n",
+		 __func__,
+		 (unsigned long long) vma->vm_start, address, vma->vm_flags,
+		 doorbell_process_allocation());
+
 
 	return io_remap_pfn_range(vma,
 				vma->vm_start,