PCI: Use of_node_name_eq() for node name comparisons

Convert string compares of DT node names to use of_node_name_eq() helper
instead. This removes direct access to the node name pointer.

Link: https://lore.kernel.org/r/20200416215114.7715-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>

drivers/pci/hotplug/rpaphp_core.c

@@ -435,7 +435,7 @@ static int rpaphp_drc_add_slot(struct device_node *dn)
  */
 int rpaphp_add_slot(struct device_node *dn)
 {
-	if (!dn->name || strcmp(dn->name, "pci"))
+	if (!of_node_name_eq(dn, "pci"))
 		return 0;
 
 	if (of_find_property(dn, "ibm,drc-info", NULL))