PCI: endpoint: pci-epf-mhi: Make structs pci_epf_ops and pci_epf_event_ops const

Both the pci_epf_ops and pci_epf_evnt_ops structs for the PCI endpoint
MHI driver are never modified.

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

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20230722230848.589428-2-lars@metafoo.deSigned-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>

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

@@ -644,7 +644,7 @@ static void pci_epf_mhi_unbind(struct pci_epf *epf)
 	pci_epc_clear_bar(epc, epf->func_no, epf->vfunc_no, epf_bar);
 }
 
-static struct pci_epc_event_ops pci_epf_mhi_event_ops = {
+static const struct pci_epc_event_ops pci_epf_mhi_event_ops = {
 	.core_init = pci_epf_mhi_core_init,
 	.link_up = pci_epf_mhi_link_up,
 	.link_down = pci_epf_mhi_link_down,
@@ -682,7 +682,7 @@ static const struct pci_epf_device_id pci_epf_mhi_ids[] = {
 	{},
 };
 
-static struct pci_epf_ops pci_epf_mhi_ops = {
+static const struct pci_epf_ops pci_epf_mhi_ops = {
 	.unbind	= pci_epf_mhi_unbind,
 	.bind	= pci_epf_mhi_bind,
 };