Convert CONFIG_PCIE1 et al to Kconfig

This converts the following to Kconfig:
   CONFIG_PCIE1
   CONFIG_PCIE2
   CONFIG_PCIE3
   CONFIG_PCIE4
   CONFIG_PCI1

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/mpc8548cds/Kconfig b/board/freescale/mpc8548cds/Kconfig
index 87f3374..bd9153b 100644
--- a/board/freescale/mpc8548cds/Kconfig
+++ b/board/freescale/mpc8548cds/Kconfig
@@ -1,5 +1,8 @@
 if TARGET_MPC8548CDS
 
+config PCI1
+	def_bool y
+
 config SYS_BOARD
 	default "mpc8548cds"