efi: app: Add a simplefb node to the devicetree

Use simplefb on ARM devices so that we see a console earlier, assuming
that 'console=tty0' is passed to Linux.

Signed-off-by: Simon Glass <sjg@chromium.org>

lib/efi_client/efi_app.c

@@ -17,6 +17,7 @@
 #include <efi_api.h>
 #include <efi_stub.h>
 #include <errno.h>
+#include <fdt_simplefb.h>
 #include <image.h>
 #include <init.h>
 #include <malloc.h>
@@ -339,6 +340,10 @@ int ft_system_setup(void *fdt, struct bd_info *bd)
 		return ret;
 	}
 
+	ret = fdt_simplefb_add_node(fdt);
+	if (ret)
+		log_warning("failed to set up simplefb\n");
+
 	free(map);
 
 	return 0;