powerpc/powernv: Print correct PHB type names

We're initializing "IODA1" and "IODA2" PHBs though they are IODA2
and NPU PHBs as below kernel log indicates.

   Initializing IODA1 OPAL PHB /pciex@3fffe40700000
   Initializing IODA2 OPAL PHB /pciex@3fff000400000

This fixes the PHB names. After it's applied, we get:

   Initializing IODA2 PHB (/pciex@3fffe40700000)
   Initializing NPU PHB (/pciex@3fff000400000)
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -55,6 +55,7 @@
 #define POWERNV_IOMMU_DEFAULT_LEVELS	1
 #define POWERNV_IOMMU_MAX_LEVELS	5
 
+static const char * const pnv_phb_names[] = { "IODA1", "IODA2", "NPU" };
 static void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl);
 
 void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level,
@@ -3628,7 +3629,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 	void *aux;
 	long rc;
 
-	pr_info("Initializing IODA%d OPAL PHB %s\n", ioda_type, np->full_name);
+	pr_info("Initializing %s PHB (%s)\n",
+		pnv_phb_names[ioda_type], of_node_full_name(np));
 
 	prop64 = of_get_property(np, "ibm,opal-phbid", NULL);
 	if (!prop64) {