lx2160a : Add emmc in boot_targets environment variable

Add emmc in supported boot_targets and
Add bootcmd environment variable for emmc boot.

Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/include/configs/lx2160ardb.h b/include/configs/lx2160ardb.h
index 82d49e5..63d77c5 100644
--- a/include/configs/lx2160ardb.h
+++ b/include/configs/lx2160ardb.h
@@ -107,6 +107,13 @@
 		"env exists secureboot && mmc read $kernelheader_addr_r "\
 		"$kernelhdr_addr_sd $kernelhdr_size_sd "	\
 		" && esbc_validate ${kernelheader_addr_r};"	\
+		"bootm $load_addr#$BOARD\0"			\
+	"sd2_bootcmd=echo Trying load from emmc card..;"	\
+		"mmc dev 1; mmcinfo; mmc read $load_addr "	\
+		"$kernel_addr_sd $kernel_size_sd ;"		\
+		"env exists secureboot && mmc read $kernelheader_addr_r "\
+		"$kernelhdr_addr_sd $kernelhdr_size_sd "	\
+		" && esbc_validate ${kernelheader_addr_r};"	\
 		"bootm $load_addr#$BOARD\0"
 
 #include <asm/fsl_secure_boot.h>