arm: ls102xa: Update PCIe dts node status

The patch changes PCIe dts node status to 'disabled' if the
corresponding controller is disabled according to serdes protocol.

Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/include/configs/ls1021atwr.h b/include/configs/ls1021atwr.h
index 3eac7ee..b5ecde3 100644
--- a/include/configs/ls1021atwr.h
+++ b/include/configs/ls1021atwr.h
@@ -236,6 +236,13 @@
 #define CONFIG_HAS_ETH2
 #endif
 
+/* PCIe */
+#define CONFIG_PCI		/* Enable PCI/PCIE */
+#define CONFIG_PCIE1		/* PCIE controler 1 */
+#define CONFIG_PCIE2		/* PCIE controler 2 */
+#define CONFIG_PCIE_LAYERSCAPE	/* Use common FSL Layerscape PCIe code */
+#define FSL_PCIE_COMPAT "fsl,ls1021a-pcie"
+
 #define CONFIG_CMD_PING
 #define CONFIG_CMD_DHCP
 #define CONFIG_CMD_MII