Encode word size into OverlayLBA structure

include/PSX/Overlay/overlay.hpp

@@ -5,13 +5,13 @@
 namespace JabyEngine {
     struct __attribute__((packed)) OverlayHeader {
         void   (*execute)();
-        uint16_t lba_size;
+        uint16_t lba_size; //< The size of the OverlayLBA section
     };
 
     // Maybe encode attributes like "isLZ4" into size parameter
     struct __attribute__((packed)) OverlayLBA {
         uint16_t lba;
-        uint16_t size;
+        uint16_t size_words;
     };
 }
 #endif //!__JABYENGINE_OVERLAY__HPP__