PCI: endpoint: pci-epf-test: Make struct pci_epf_ops const

The pci_epf_ops struct for the PCI endpoint test driver is never modified.

Mark it as const so it can be placed in the read-only section.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20230722230848.589428-5-lars@metafoo.de
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>

Author: larsclausen

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

@@ -973,7 +973,7 @@ static int pci_epf_test_probe(struct pci_epf *epf,
 	return 0;
 }
 
-static struct pci_epf_ops ops = {
+static const struct pci_epf_ops ops = {
 	.unbind	= pci_epf_test_unbind,
 	.bind	= pci_epf_test_bind,
 };