kernel: rework init

kernel-src/mm/pmm.c

@@ -6,6 +6,7 @@
 #include <mutex.h>
 #include <util.h>
 #include <kernel/vmmcache.h>
+#include <kernel/init.h>
 
 uintptr_t hhdmbase;
 static size_t memorysize;
@@ -266,6 +267,11 @@ void pmm_init() {
 	MUTEX_INIT(&freelistmutex);
 }
 
+INIT_ROUTINE_DEFINE(pmm, 
+		INIT_ROUTINE_FLAGS_NONE, 
+		pmm_init, 
+		arch_early);
+
 // XXX pmm_alloc won't be able to take pages from the page cache when the allocation size is over 1 page
 
 void *pmm_alloc(size_t size, int section) {