powerpc/47x: Split ppc47x machine in two

This machine matches two compatibles and sets .pci_irq_fixup
on one of them.

Split it into two machines, then the probe function can be dropped.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Drop references to ppc47x_probe() to fix build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/6cb9865d916231c38401ba34ad1a98c249fae135.1676711562.git.christophe.leroy@csgroup.eu

arch/powerpc/platforms/44x/ppc476.c

@@ -114,7 +114,8 @@ static int __init ppc47x_device_probe(void)
 
 	return 0;
 }
-machine_device_initcall(ppc47x, ppc47x_device_probe);
+machine_device_initcall(ppc47x_akebono, ppc47x_device_probe);
+machine_device_initcall(ppc47x_currituck, ppc47x_device_probe);
 
 static void __init ppc47x_init_irq(void)
 {
@@ -249,7 +250,8 @@ static int __init ppc47x_get_board_rev(void)
 	pr_info("%s: Unable to find board revision\n", __func__);
 	return 0;
 }
-machine_arch_initcall(ppc47x, ppc47x_get_board_rev);
+machine_arch_initcall(ppc47x_akebono, ppc47x_get_board_rev);
+machine_arch_initcall(ppc47x_currituck, ppc47x_get_board_rev);
 
 /* Use USB controller should have been hardware swizzled but it wasn't :( */
 static void ppc47x_pci_irq_fixup(struct pci_dev *dev)
@@ -268,27 +270,22 @@ static void ppc47x_pci_irq_fixup(struct pci_dev *dev)
 	}
 }
 
-/*
- * Called very early, MMU is off, device-tree isn't unflattened
- */
-static int __init ppc47x_probe(void)
-{
-	if (of_machine_is_compatible("ibm,akebono"))
-		return 1;
-
-	if (of_machine_is_compatible("ibm,currituck")) {
-		ppc_md.pci_irq_fixup = ppc47x_pci_irq_fixup;
-		return 1;
-	}
-
-	return 0;
-}
+define_machine(ppc47x_akebono) {
+	.name			= "PowerPC 47x (akebono)",
+	.compatible		= "ibm,akebono",
+	.progress		= udbg_progress,
+	.init_IRQ		= ppc47x_init_irq,
+	.setup_arch		= ppc47x_setup_arch,
+	.restart		= ppc4xx_reset_system,
+	.calibrate_decr		= generic_calibrate_decr,
+};
 
-define_machine(ppc47x) {
-	.name			= "PowerPC 47x",
-	.probe			= ppc47x_probe,
+define_machine(ppc47x_currituck) {
+	.name			= "PowerPC 47x (currituck)",
+	.compatible		= "ibm,currituck",
 	.progress		= udbg_progress,
 	.init_IRQ		= ppc47x_init_irq,
+	.pci_irq_fixup		= ppc47x_pci_irq_fixup,
 	.setup_arch		= ppc47x_setup_arch,
 	.restart		= ppc4xx_reset_system,
 	.calibrate_decr		= generic_calibrate_decr,