powerpc/52xx/mpc5200_simple: Move PHB discovery

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201103043523.916109-8-oohall@gmail.com

arch/powerpc/platforms/52xx/mpc5200_simple.c

@@ -40,8 +40,6 @@ static void __init mpc5200_simple_setup_arch(void)
 
 	/* Some mpc5200 & mpc5200b related configuration */
 	mpc5200_setup_xlb_arbiter();
-
-	mpc52xx_setup_pci();
 }
 
 /* list of the supported boards */
@@ -73,6 +71,7 @@ define_machine(mpc5200_simple_platform) {
 	.name		= "mpc5200-simple-platform",
 	.probe		= mpc5200_simple_probe,
 	.setup_arch	= mpc5200_simple_setup_arch,
+	.discover_phbs	= mpc52xx_setup_pci,
 	.init		= mpc52xx_declare_of_platform_devices,
 	.init_IRQ	= mpc52xx_init_irq,
 	.get_irq	= mpc52xx_get_irq,