Staging: hv: channel: export vmbus_receivepacket_raw to modules

Drivers need to call this directly, so export it, like other
vmbus functions.

Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/channel.c

@@ -1017,6 +1017,7 @@ int vmbus_recvpacket_raw(struct vmbus_channel *channel, void *buffer,
 	spin_unlock_irqrestore(&channel->inbound_lock, flags);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(vmbus_recvpacket_raw);
 
 /*
  * vmbus_onchannel_event - Channel event callback