Fix headers

core/assert.h

@@ -1,5 +1,6 @@
 #pragma once
 #include "stack.h"
+#include "vga.h"
 
 #define assert(p) do {	\
 	if (!(p)) {	\

core/math.h

@@ -1,4 +1,5 @@
 #pragma once
-#include "stdint.h"
+#include "stdarg.h"
+#include "types.h"
 
 uint32_t log2(uint32_t x);

drivers/vga.h

@@ -1,6 +1,6 @@
 #pragma once
 #include "stdarg.h"
-#include "stdint.h"
+#include "types.h"
 
 // https://wiki.osdev.org/Text_UI
 #define BLACK   0x00