config: enable SP805 watchdog support for LS1028A

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/configs/ls1028ardb_tfa_defconfig b/configs/ls1028ardb_tfa_defconfig
index dd27f65..a8e4ddb 100644
--- a/configs/ls1028ardb_tfa_defconfig
+++ b/configs/ls1028ardb_tfa_defconfig
@@ -21,6 +21,7 @@
 CONFIG_CMD_PCI=y
 CONFIG_CMD_SF=y
 CONFIG_CMD_USB=y
+CONFIG_CMD_WDT=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_CACHE=y
 CONFIG_OF_CONTROL=y
@@ -58,4 +59,6 @@
 CONFIG_DM_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
+CONFIG_WDT=y
+CONFIG_WDT_SP805=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y