boot/spl: update for spl-in-libstrat

stratosphere/boot/source/updater/updater_api.hpp

@@ -17,6 +17,7 @@
 #pragma once
 #include <switch.h>
 #include <stratosphere.hpp>
+#include <stratosphere/spl/spl_types.hpp>
 
 #include "updater_types.hpp"
 

stratosphere/boot/source/updater/updater_types.hpp

@@ -18,9 +18,6 @@
 #include <switch.h>
 #include <stratosphere.hpp>
 
-/* TODO: Better way to do this? */
-#include "../boot_spl_utils.hpp"
-
 namespace sts::updater {
 
     /* Types. */