rapidio/switches: add driver for IDT gen3 switches

Add RapidIO switch driver for IDT Gen3 switch devices: RXS1632 and
RXS2448.

[alexandre.bounine@idt.com: fixup for original driver patch]
  Link: http://lkml.kernel.org/r/1469137596-18241-1-git-send-email-alexandre.bounine@idt.com
Link: http://lkml.kernel.org/r/1469125134-16523-14-git-send-email-alexandre.bounine@idt.com
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Tested-by: Barry Wood <barry.wood@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Barry Wood <barry.wood@idt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h
index 2543bc1..334c576 100644
--- a/include/linux/rio_ids.h
+++ b/include/linux/rio_ids.h
@@ -38,5 +38,7 @@
 #define RIO_DID_IDTVPS1616		0x0377
 #define RIO_DID_IDTSPS1616		0x0378
 #define RIO_DID_TSI721			0x80ab
+#define RIO_DID_IDTRXS1632		0x80e5
+#define RIO_DID_IDTRXS2448		0x80e6
 
 #endif				/* LINUX_RIO_IDS_H */