firewire: missing newline in printk

Also remove some errno printouts which will be shown by infrastructure
code anyway.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 25f2aa4..16e942f 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -985,7 +985,7 @@
 	 * transfer direction not handled.
 	 */
 	if (cmd->sc_data_direction == DMA_BIDIRECTIONAL) {
-		fw_error("Cannot handle DMA_BIDIRECTIONAL - rejecting command");
+		fw_error("Can't handle DMA_BIDIRECTIONAL, rejecting command\n");
 		cmd->result = DID_ERROR << 16;
 		done(cmd);
 		return 0;