lx2160: Correct default environment variable

Create separate "boot_scripts" and "boot_script_hdr" environment
variable for LX2160A RDB and QDS board.
Signed-off-by: NMeenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: NPriyanka Jain <priyanka.jain@nxp.com>

include/configs/lx2160a_common.h

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2020 NXP
  */
 
 #ifndef __LX2_COMMON_H
@@ -229,8 +229,6 @@ unsigned long get_board_ddr_clk(void);
 	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; "	\

include/configs/lx2160aqds.h

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * Copyright 2018-2019 NXP
+ * Copyright 2018-2020 NXP
  */
 
 #ifndef __LX2_QDS_H
@@ -120,6 +120,8 @@ u8 qixis_esdhc_detect_quirk(void);
 #define CONFIG_EXTRA_ENV_SETTINGS		\
 	EXTRA_ENV_SETTINGS			\
 	"lx2160aqds_vdd_mv=800\0"		\
+	"boot_scripts=lx2160aqds_boot.scr\0"	\
+	"boot_script_hdr=hdr_lx2160aqds_bs.out\0"	\
 	"BOARD=lx2160aqds\0"			\
 	"xspi_bootcmd=echo Trying load from flexspi..;"		\
 		"sf probe 0:0 && sf read $load_addr "		\

include/configs/lx2160ardb.h

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
- * Copyright 2018 NXP
+ * Copyright 2018,2020 NXP
  */
 
 #ifndef __LX2_RDB_H
@@ -89,6 +89,8 @@
 /* Initial environment variables */
 #define CONFIG_EXTRA_ENV_SETTINGS		\
 	EXTRA_ENV_SETTINGS			\
+	"boot_scripts=lx2160ardb_boot.scr\0"	\
+	"boot_script_hdr=hdr_lx2160ardb_bs.out\0"	\
 	"lx2160ardb_vdd_mv=800\0"		\
 	"BOARD=lx2160ardb\0"			\
 	"xspi_bootcmd=echo Trying load from flexspi..;"		\