vmbus: make channel_message table constant

This table is immutable and should be const.
Cleanup indentation and whitespace for this as well.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 5ca5004..8b272d3 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -853,7 +853,7 @@ void vmbus_on_msg_dpc(unsigned long data)
 	struct hv_message *msg = (struct hv_message *)page_addr +
 				  VMBUS_MESSAGE_SINT;
 	struct vmbus_channel_message_header *hdr;
-	struct vmbus_channel_message_table_entry *entry;
+	const struct vmbus_channel_message_table_entry *entry;
 	struct onmessage_work_context *ctx;
 	u32 message_type = msg->header.message_type;