can: can327: use KBUILD_MODNAME instead of hard coded names

The driver uses the string "can327" to populate
tty_ldisc_ops::name. KBUILD_MODNAME also evaluates to "can327". Use
KBUILD_MODNAME and get rid on the hardcoded string names.
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20220726082707.58758-2-mailhol.vincent@wanadoo.frSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/can327.c

@@ -10,7 +10,7 @@
  *                   Fred N. van Kempen <waltje@uwalt.nl.mugnet.org>
  */
 
-#define pr_fmt(fmt) "can327: " fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/init.h>
 #include <linux/module.h>
@@ -1100,7 +1100,7 @@ static int can327_ldisc_ioctl(struct tty_struct *tty, unsigned int cmd,
 
 static struct tty_ldisc_ops can327_ldisc = {
 	.owner = THIS_MODULE,
-	.name = "can327",
+	.name = KBUILD_MODNAME,
 	.num = N_CAN327,
 	.receive_buf = can327_ldisc_rx,
 	.write_wakeup = can327_ldisc_tx_wakeup,