w1: send status messages after command processing

Send completion status of the commands to the userspace.  Message and
protocol are described in the documentation.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Paul Alfille <paul.alfille@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
index 68a4ff4..27e950f 100644
--- a/drivers/w1/w1_netlink.h
+++ b/drivers/w1/w1_netlink.h
@@ -40,7 +40,7 @@
 struct w1_netlink_msg
 {
 	__u8				type;
-	__u8				reserved;
+	__u8				status;
 	__u16				len;
 	union {
 		__u8			id[8];