Move architecture specific globals to external header, as ex. there is no GDT on ARM

xtoskrnl/includes/i686/globals.h

@@ -0,0 +1,24 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/includes/i686/globals.h
+ * DESCRIPTION:     XT kernel global variables related to i686 architecture
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTOSKRNL_I686_GLOBALS_H
+#define __XTOSKRNL_I686_GLOBALS_H
+
+#include <xtos.h>
+
+
+/* Initial GDT */
+EXTERN KGDTENTRY ArInitialGdt[GDT_ENTRIES];
+
+/* Initial IDT */
+EXTERN KIDTENTRY ArInitialIdt[IDT_ENTRIES];
+
+/* Initial TSS */
+EXTERN KTSS ArInitialTss;
+
+#endif /* __XTOSKRNL_I686_GLOBALS_H */