arch/arm/up_createstack : Add missing header include
For using heapinfo function, mm.h should be included.
#include <debug.h>
#include <errno.h>
+#ifdef CONFIG_DEBUG_MM_HEAPINFO
+#include <tinyara/mm/mm.h>
+#endif
#include <tinyara/kmalloc.h>
#include <tinyara/arch.h>
#include <arch/board/board.h>
