arm: ls1021a: Enable PCIe in defconfigs

The patch enables PCIe in ls1021a defconfigs and
removes unused PCIe related macro defines.

Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/configs/ls1021aiot_sdcard_defconfig b/configs/ls1021aiot_sdcard_defconfig
index 1369fe6..f72bd4e 100644
--- a/configs/ls1021aiot_sdcard_defconfig
+++ b/configs/ls1021aiot_sdcard_defconfig
@@ -16,3 +16,7 @@
 CONFIG_DM_SPI=y
 CONFIG_FSL_DSPI=y
 CONFIG_FSL_QSPI=y
+CONFIG_PCI=y
+CONFIG_DM_PCI=y
+CONFIG_DM_PCI_COMPAT=y
+CONFIG_PCIE_LAYERSCAPE=y