tty: n_tty: make flow of n_tty_receive_buf_common() a bool

The 'flow' parameter of n_tty_receive_buf_common() is meant to be a
boolean value. So use bool and alter call sites accordingly.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20230827074147.2287-2-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Jiri Slaby (SUSE)

drivers/tty/n_tty.c

@@ -1665,7 +1665,7 @@ static void __receive_buf(struct tty_struct *tty, const u8 *cp, const u8 *fp,
  */
 static size_t
 n_tty_receive_buf_common(struct tty_struct *tty, const u8 *cp, const u8 *fp,
-			 int count, int flow)
+			 int count, bool flow)
 {
 	struct n_tty_data *ldata = tty->disc_data;
 	size_t rcvd = 0;
@@ -1748,13 +1748,13 @@ n_tty_receive_buf_common(struct tty_struct *tty, const u8 *cp, const u8 *fp,
 static void n_tty_receive_buf(struct tty_struct *tty, const u8 *cp,
 			      const u8 *fp, size_t count)
 {
-	n_tty_receive_buf_common(tty, cp, fp, count, 0);
+	n_tty_receive_buf_common(tty, cp, fp, count, false);
 }
 
 static size_t n_tty_receive_buf2(struct tty_struct *tty, const u8 *cp,
 				 const u8 *fp, size_t count)
 {
-	return n_tty_receive_buf_common(tty, cp, fp, count, 1);
+	return n_tty_receive_buf_common(tty, cp, fp, count, true);
 }
 
 /**