greybus: introduce SVC protocol

This patch adds support for the Greybus SVC protocol.  We may want
to rearrange protocol numbers at some point, since this is a pretty
fundamental protocol.

Note:  It has only been compile tested; no SVC CPorts have yet been
defined, so this code is not yet exercised.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/drivers/staging/greybus/greybus_manifest.h b/drivers/staging/greybus/greybus_manifest.h
index de1b1db..d6175ce 100644
--- a/drivers/staging/greybus/greybus_manifest.h
+++ b/drivers/staging/greybus/greybus_manifest.h
@@ -42,6 +42,7 @@
 	GREYBUS_PROTOCOL_LOOPBACK	= 0x11,
 	GREYBUS_PROTOCOL_I2S_RECEIVER	= 0x12,
 	GREYBUS_PROTOCOL_I2S_TRANSMITTER = 0x13,
+	GREYBUS_PROTOCOL_SVC            = 0x14,
 		/* ... */
 	GREYBUS_PROTOCOL_RAW		= 0xfe,
 	GREYBUS_PROTOCOL_VENDOR		= 0xff,