lx2160aqds: add support for backplane kr

Add support for backplane kr on lx2160aqds: remove board specific fixups
on lx2160aqds for ethernet interfaces specified in device tree as
supported backplane modes.

Signed-off-by: Florinel Iordache <florinel.iordache@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/freescale/lx2160a/eth_lx2160aqds.c b/board/freescale/lx2160a/eth_lx2160aqds.c
index 6500649..0e928eb 100644
--- a/board/freescale/lx2160a/eth_lx2160aqds.c
+++ b/board/freescale/lx2160a/eth_lx2160aqds.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2020 NXP
  *
  */
 
@@ -616,6 +616,13 @@
 		return offset;
 	}
 
+	phy_string = fdt_getprop(fdt, offset, "phy-connection-type", NULL);
+	if (is_backplane_mode(phy_string)) {
+		/* Backplane KR mode: skip fixups */
+		printf("Interface %d in backplane KR mode\n", dpmac_id);
+		return 0;
+	}
+
 	ret = fdt_appendprop_cell(fdt, offset, "phy-handle", node_phandle);
 	if (ret)
 		printf("%d@%s %d\n", __LINE__, __func__, ret);