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/arch/Kconfig.nxp b/arch/Kconfig.nxp
index 771a6c1..5971ec5 100644
--- a/arch/Kconfig.nxp
+++ b/arch/Kconfig.nxp
@@ -138,6 +138,22 @@
 	bool "Layerscape non-secure access support"
 	depends on ARCH_LS1021A || FSL_LSCH2
 
+config PCIE1
+	bool "PCIe controller #1"
+	depends on LAYERSCAPE_NS_ACCESS || PPC
+
+config PCIE2
+	bool "PCIe controller #2"
+	depends on LAYERSCAPE_NS_ACCESS || PPC
+
+config PCIE3
+	bool "PCIe controller #3"
+	depends on LAYERSCAPE_NS_ACCESS || PPC
+
+config PCIE4
+	bool "PCIe controller #4"
+	depends on LAYERSCAPE_NS_ACCESS || PPC
+
 config FSL_USE_PCA9547_MUX
 	bool "Enable PCA9547 I2C Mux on Freescale boards"
 	depends on PPC || ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3