configs: Layerscape: Remove the 'fdt_addr' env

On Layerscape platforms, the DTB is loaded from boot filesystem,
per the fdt_addr description in doc/README.distro, it must be
removed.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/ls1012afrdm.h b/include/configs/ls1012afrdm.h
index 44518cd..cb79d63 100644
--- a/include/configs/ls1012afrdm.h
+++ b/include/configs/ls1012afrdm.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2016 Freescale Semiconductor, Inc.
+ * Copyright 2021 NXP
  */
 
 #ifndef __LS1012ARDB_H__
@@ -21,7 +22,6 @@
 #define CONFIG_EXTRA_ENV_SETTINGS		\
 	"verify=no\0"				\
 	"fdt_high=0xffffffffffffffff\0"		\
-	"fdt_addr=0x00f00000\0"			\
 	"kernel_addr=0x01000000\0"		\
 	"scriptaddr=0x80000000\0"		\
 	"fdtheader_addr_r=0x80100000\0"		\