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/lx2160aqds_tfa_defconfig b/configs/lx2160aqds_tfa_defconfig
index c2ef337..167c517 100644
--- a/configs/lx2160aqds_tfa_defconfig
+++ b/configs/lx2160aqds_tfa_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TFABOOT=y
 CONFIG_SYS_TEXT_BASE=0x82000000
 CONFIG_SYS_MALLOC_F_LEN=0x6000
+CONFIG_FSPI_AHB_EN_4BYTE=y
 CONFIG_ENV_SIZE=0x2000
 CONFIG_ENV_OFFSET=0x500000
 CONFIG_NR_DRAM_BANKS=3