add arm64 support

- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests

arch/arm64/kernel/include/cpulocal.h

@@ -0,0 +1,13 @@
+/* cpulocal.h COPYRIGHT FUJITSU LIMITED 2015 */
+#ifndef __HEADER_ARM64_COMMON_CPULOCAL_H
+#define __HEADER_ARM64_COMMON_CPULOCAL_H
+
+#include <types.h>
+#include <registers.h>
+#include <thread_info.h>
+
+union arm64_cpu_local_variables *get_arm64_cpu_local_variable(int id);
+union arm64_cpu_local_variables *get_arm64_this_cpu_local(void);
+void *get_arm64_this_cpu_kstack(void);
+
+#endif /* !__HEADER_ARM64_COMMON_CPULOCAL_H */