Add a few missing includes.

Bug: https://bugs.gentoo.org/892852

--- a/src/libs/dxvk-native-1.9.2a/src/util/util_matrix.cpp
+++ b/src/libs/dxvk-native-1.9.2a/src/util/util_matrix.cpp
@@ -1,3 +1,4 @@
+#include <cstdint>
 #include "util_matrix.h"
 
 namespace dxvk {
@@ -229,4 +230,4 @@
     return os;
   }
 
-}
\ No newline at end of file
+}
--- a/src/libs/dxvk-native-1.9.2a/src/util/util_vector.h
+++ b/src/libs/dxvk-native-1.9.2a/src/util/util_vector.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <iostream>
+#include <cstdint>
 
 #include "util_bit.h"
 #include "util_math.h"