microblaze/PCI: Remove Null PCI config access unused functions

Remove unused NULL_PCI_OP config access functions, for the case when
we can't find a hose.

Remove unused EARLY_PCI_OP and other declarations.
Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-3-thippeswamy.havalige@amd.comSigned-off-by: Michal Simek <michal.simek@amd.com>

arch/microblaze/pci/pci-common.c

@@ -996,67 +996,3 @@ long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
 
 	return result;
 }
-
-/*
- * Null PCI config access functions, for the case when we can't
- * find a hose.
- */
-#define NULL_PCI_OP(rw, size, type)					\
-static int								\
-null_##rw##_config_##size(struct pci_dev *dev, int offset, type val)	\
-{									\
-	return PCIBIOS_DEVICE_NOT_FOUND;				\
-}
-
-static int
-null_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		 int len, u32 *val)
-{
-	return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static int
-null_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		  int len, u32 val)
-{
-	return PCIBIOS_DEVICE_NOT_FOUND;
-}
-
-static struct pci_ops null_pci_ops = {
-	.read = null_read_config,
-	.write = null_write_config,
-};
-
-/*
- * These functions are used early on before PCI scanning is done
- * and all of the pci_dev and pci_bus structures have been created.
- */
-static struct pci_bus *
-fake_pci_bus(struct pci_controller *hose, int busnr)
-{
-	static struct pci_bus bus;
-
-	if (!hose)
-		pr_err("Can't find hose for PCI bus %d!\n", busnr);
-
-	bus.number = busnr;
-	bus.sysdata = hose;
-	bus.ops = hose ? hose->ops : &null_pci_ops;
-	return &bus;
-}
-
-#define EARLY_PCI_OP(rw, size, type)					\
-int early_##rw##_config_##size(struct pci_controller *hose, int bus,	\
-			       int devfn, int offset, type value)	\
-{									\
-	return pci_bus_##rw##_config_##size(fake_pci_bus(hose, bus),	\
-					    devfn, offset, value);	\
-}
-
-EARLY_PCI_OP(read, byte, u8 *)
-EARLY_PCI_OP(read, word, u16 *)
-EARLY_PCI_OP(read, dword, u32 *)
-EARLY_PCI_OP(write, byte, u8)
-EARLY_PCI_OP(write, word, u16)
-EARLY_PCI_OP(write, dword, u32)
-