addind more important kernel files and also fixing bugs

kernel/utils.h

@@ -1,6 +1,14 @@
 #ifndef UTILS_H
 #define UTILS_H
+#include <stdint.h>
 
-void util_function();
+
+// Convert integer to string (base is typically 10, 16, etc.)
+char* itoa(int value, char* str, int base);
+
+// Convert unsigned integer to string (base is typically 10, 16, etc.)
+char* utoa(unsigned int value, char* str, int base);
+
+void print_hex(uint32_t val);
 
 #endif // UTILS_H