powerpc/85xx & 86xx: Rework ft_fsl_pci_setup to not require aliases

Previously we used an alias the pci node to determine which node to
fixup or delete.  Now we use the new fdt_node_offset_by_compat_reg to
find the node to update.

Additionally, we replace the code in each board with a single macro call
that makes assumes uniform naming and reduces duplication in this area.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/atum8548/atum8548.c b/board/atum8548/atum8548.c
index 4f7d935..671f9e9 100644
--- a/board/atum8548/atum8548.c
+++ b/board/atum8548/atum8548.c
@@ -292,14 +292,6 @@
 {
 	ft_cpu_setup(blob, bd);
 
-#ifdef CONFIG_PCI1
-	ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
-#endif
-#ifdef CONFIG_PCI2
-	ft_fsl_pci_setup(blob, "pci1", &pci2_hose);
-#endif
-#ifdef CONFIG_PCIE1
-	ft_fsl_pci_setup(blob, "pci2", &pcie1_hose);
-#endif
+	FT_FSL_PCI_SETUP;
 }
 #endif