staging: fwserial: Use normal logging styles

Logging messages without newline termination are subject
to interleaving by other messages.

Avoid this by adding newlines to each message.

Neaten fwtty_<level> logging macros.
Convert driver_err to pr_err.
Add #define pr_fmt to prefix those messages.
Remove now unused driver_err macro.
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fwserial/fwserial.h

@@ -356,8 +356,6 @@ static const char loop_dev_name[] = "fwloop";
 
 extern struct tty_driver *fwtty_driver;
 
-#define driver_err(s, v...)	pr_err(KBUILD_MODNAME ": " s, ##v)
-
 struct fwtty_port *fwtty_port_get(unsigned index);
 void fwtty_port_put(struct fwtty_port *port);