rpi: Add identifier for the new RPi400

The Raspberry Pi Foundation released the new RPi400 which we want to
detect, so we can enable Ethernet on it and know the correct device tree
file name.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index 6a9384f..772cb40 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -157,6 +157,11 @@
 		DTB_DIR "bcm2711-rpi-4-b.dtb",
 		true,
 	},
+	[0x13] = {
+		"400",
+		DTB_DIR "bcm2711-rpi-400.dtb",
+		true,
+	},
 };
 
 static const struct rpi_model rpi_models_old_scheme[] = {