arm: ls1021a: Enable CONFIG_OF_LIBFDT and CONFIG_FIT in defconfig

In defconfig, enable CONFIG_OF_LIBFDT to support booting DT linux
kernel and enable COFNIG_FIT to support FIT image.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/configs/ls1021atwr_sdcard_qspi_defconfig b/configs/ls1021atwr_sdcard_qspi_defconfig
index 583325d..01856d4 100644
--- a/configs/ls1021atwr_sdcard_qspi_defconfig
+++ b/configs/ls1021atwr_sdcard_qspi_defconfig
@@ -5,6 +5,9 @@
 CONFIG_SPL=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_OF_LIBFDT=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
 CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SD_BOOT,SD_BOOT_QSPI"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y