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/configs/MPC8548CDS_36BIT_defconfig b/configs/MPC8548CDS_36BIT_defconfig
index 14eeef9..6fa89aa 100644
--- a/configs/MPC8548CDS_36BIT_defconfig
+++ b/configs/MPC8548CDS_36BIT_defconfig
@@ -11,6 +11,7 @@
 CONFIG_TARGET_MPC8548CDS=y
 CONFIG_MPC85XX_HAVE_RESET_VECTOR=y
 CONFIG_ENABLE_36BIT_PHYS=y
+CONFIG_PCIE1=y
 CONFIG_PHYS_64BIT=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y