video_core/memory_manager: Add missing <algorithm> include

src/video_core/memory_manager.cpp

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
+
 #include "common/alignment.h"
 #include "common/assert.h"
 #include "common/logging/log.h"