Config header file + comment header

src/mem/heap/kheap.c

@@ -1,9 +1,16 @@
+/*
+ * @author  xamidev <xamidev@riseup.net>
+ * @brief   Kernel heap
+ * @license GPL-3.0-only
+ */
+
 #include "kheap.h"
 #include "mem/paging/paging.h"
 #include "mem/paging/pmm.h"
 #include <stddef.h>
 #include <kernel.h>
 #include "sched/process.h"
+#include "config.h"
 
 extern uint64_t kernel_phys_base;
 extern uint64_t kernel_virt_base;