feat(n1sdp): enable trusted board boot on n1sdp

Move from RESET_TO_BL31 boot to a TBBR style boot on N1sdp.

Signed-off-by: sahil <sahil@arm.com>
Change-Id: I153ccb43a4a013830973c7a183825d62b372c65e
diff --git a/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts b/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts
new file mode 100644
index 0000000..0535822
--- /dev/null
+++ b/plat/arm/board/n1sdp/fdts/n1sdp_fw_config.dts
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2022, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/tbbr/tbbr_img_def.h>
+
+/dts-v1/;
+/ {
+	dtb-registry {
+		compatible = "fconf,dyn_cfg-dtb_registry";
+		tb_fw-config {
+			load-address = <0x0 0x4001300>;
+			max-size = <0x200>;
+			id = <TB_FW_CONFIG_ID>;
+		};
+	};
+};