configs: lx2160a: Enable FSPI_AHB_EN_4B config

Enable 4-byte Fast Read command for Flexspi AHB mode

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/lx2160ardb_tfa_SECURE_BOOT_defconfig b/configs/lx2160ardb_tfa_SECURE_BOOT_defconfig
index 20f8c3b..87459dd 100644
--- a/configs/lx2160ardb_tfa_SECURE_BOOT_defconfig
+++ b/configs/lx2160ardb_tfa_SECURE_BOOT_defconfig
@@ -5,6 +5,7 @@
 CONFIG_SYS_MALLOC_F_LEN=0x6000
 CONFIG_NXP_ESBC=y
 CONFIG_EMC2305=y
+CONFIG_FSPI_AHB_EN_4BYTE=y
 CONFIG_ENV_SIZE=0x2000
 CONFIG_NR_DRAM_BANKS=3
 CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT=y