isci: move remote_device handling out of the core

Now that the core/lldd remote_device data structures are nominally unified
merge the corresponding sources into the top-level directory.  Also move the
remote_node_context infrastructure which has no analog at the lldd level.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index f54f523..e011d66 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -56,10 +56,9 @@
 #include <linux/completion.h>
 #include <linux/irqflags.h>
 #include "scic_task_request.h"
-#include "scic_remote_device.h"
 #include "scic_io_request.h"
-#include "scic_sds_remote_device.h"
-#include "scic_sds_remote_node_context.h"
+#include "remote_device.h"
+#include "remote_node_context.h"
 #include "isci.h"
 #include "request.h"
 #include "sata.h"