configs: ls2088ardb: Correct DEFAULT_DEVICE_TREE value

LS2088A-RDB has CONFIG_DEFAULT_DEVICE_TREE value correctly set as
"fsl-ls2088a-rdb-qspi" for QSPI secure/non-secure boot and TFA
non-secure boot mode.

Fix the value for TFA secure boot mode.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/ls2088ardb_tfa_SECURE_BOOT_defconfig b/configs/ls2088ardb_tfa_SECURE_BOOT_defconfig
index d73197d..d4762de 100644
--- a/configs/ls2088ardb_tfa_SECURE_BOOT_defconfig
+++ b/configs/ls2088ardb_tfa_SECURE_BOOT_defconfig
@@ -32,7 +32,7 @@
 CONFIG_CMD_CACHE=y
 CONFIG_MP=y
 CONFIG_OF_CONTROL=y
-CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2080a-rdb"
+CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2088a-rdb-qspi"
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM=y
 CONFIG_SATA_CEVA=y