lx2160: Correct default environment variable

Create separate "boot_scripts" and "boot_script_hdr" environment
variable for LX2160A RDB and QDS board.

Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/lx2160a_common.h b/include/configs/lx2160a_common.h
index cd3e2c4..02cccff 100644
--- a/include/configs/lx2160a_common.h
+++ b/include/configs/lx2160a_common.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2020 NXP
  */
 
 #ifndef __LX2_COMMON_H
@@ -229,8 +229,6 @@
 	BOOTENV					\
 	"mcmemsize=0x70000000\0"		\
 	XSPI_MC_INIT_CMD				\
-	"boot_scripts=lx2160ardb_boot.scr\0"	\
-	"boot_script_hdr=hdr_lx2160ardb_bs.out\0"	\
 	"scan_dev_for_boot_part="		\
 		"part list ${devtype} ${devnum} devplist; "	\
 		"env exists devplist || setenv devplist 1; "	\