add arm64 support

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

arch/arm64/kernel/include/ihk/ikc.h

@@ -0,0 +1,14 @@
+/* ikc.h COPYRIGHT FUJITSU LIMITED 2015 */
+#ifndef __HEADER_ARM64_IHK_IKC_H
+#define __HEADER_ARM64_IHK_IKC_H
+
+#include <ikc/ihk.h>
+
+#define IKC_PORT_IKC2MCKERNEL 501
+#define IKC_PORT_IKC2LINUX    503
+
+/* manycore side */
+int ihk_mc_ikc_init_first(struct ihk_ikc_channel_desc *,
+                          ihk_ikc_ph_t handler);
+
+#endif /* !__HEADER_ARM64_IHK_IKC_H */