PCI: pci-epf-test: Register notifier if only core_init_notifier is enabled

The pci_epf_test_notifier function should be installed also if only
core_init_notifier is enabled. Fix the current logic.

Link: https://lore.kernel.org/r/20220825090101.20474-1-hayashi.kunihiko@socionext.com
Fixes: 5e50ee27 ("PCI: pci-epf-test: Add support to defer core initialization")
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NLorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: NOm Prakash Singh <omp@nvidia.com>
Acked-by: NKishon Vijay Abraham I <kishon@ti.com>

drivers/pci/endpoint/functions/pci-epf-test.c

@@ -979,7 +979,7 @@ static int pci_epf_test_bind(struct pci_epf *epf)
 	if (ret)
 		epf_test->dma_supported = false;
 
-	if (linkup_notifier) {
+	if (linkup_notifier || core_init_notifier) {
 		epf->nb.notifier_call = pci_epf_test_notifier;
 		pci_epc_register_notifier(epc, &epf->nb);
 	} else {