ARM: mx6: Enable PCIe on Sabrelite

Enable PCI express on MX6 Sabrelite.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>

include/configs/nitrogen6x.h

@@ -352,4 +352,15 @@
 #define CONFIG_SUPPORT_RAW_INITRD
 #define CONFIG_CMD_FS_GENERIC
 
+/*
+ * PCI express
+ */
+#define CONFIG_CMD_PCI
+#ifdef CONFIG_CMD_PCI
+#define CONFIG_PCI
+#define CONFIG_PCI_PNP
+#define CONFIG_PCI_SCAN_SHOW
+#define CONFIG_PCIE_IMX
+#endif
+
 #endif	       /* __CONFIG_H */