add arm64 support

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

arch/arm64/kernel/include/stringify.h

@@ -0,0 +1,17 @@
+/* stringify.h COPYRIGHT FUJITSU LIMITED 2017 */
+
+/**
+ * @ref.impl host-kernel/include/linux/stringify.h
+ */
+#ifndef __LINUX_STRINGIFY_H
+#define __LINUX_STRINGIFY_H
+
+/* Indirect stringification.  Doing two levels allows the parameter to be a
+ * macro itself.  For example, compile with -DFOO=bar, __stringify(FOO)
+ * converts to "bar".
+ */
+
+#define __stringify_1(x...)#x
+#define __stringify(x...)__stringify_1(x)
+
+#endif/* !__LINUX_STRINGIFY_H */