[ARM] Add kmap_types.h and percpu.h

include/asm-arm/kmap_types.h

+#ifndef __ARM_KMAP_TYPES_H
+#define __ARM_KMAP_TYPES_H
+
+/*
+ * This is the "bare minimum".  AIO seems to require this.
+ */
+enum km_type {
+	KM_IRQ0,
+	KM_USER1
+};
+
+#endif

include/asm-arm/percpu.h

+#ifndef __ARM_PERCPU
+#define __ARM_PERCPU
+
+#include <asm-generic/percpu.h>
+
+#endif