serial: core: Fix Coding Style

This patch fixes the following checkpatch error and warning:
  1. space required after ','
  2. Missing a blank line after declarations

Signed-off-by: Tamseel Shams <m.shams@samsung.com>
Link: https://lore.kernel.org/r/20200716115438.9967-1-m.shams@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/serial_core.c

@@ -1121,7 +1121,7 @@ static int uart_break_ctl(struct tty_struct *tty, int break_state)
 	return ret;
 }
 
-static int uart_do_autoconfig(struct tty_struct *tty,struct uart_state *state)
+static int uart_do_autoconfig(struct tty_struct *tty, struct uart_state *state)
 {
 	struct tty_port *port = &state->port;
 	struct uart_port *uport;
@@ -1524,6 +1524,7 @@ static void uart_set_termios(struct tty_struct *tty,
 	/* Handle transition away from B0 status */
 	else if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
 		unsigned int mask = TIOCM_DTR;
+
 		if (!(cflag & CRTSCTS) || !tty_throttled(tty))
 			mask |= TIOCM_RTS;
 		uart_set_mctrl(uport, mask);
@@ -2280,6 +2281,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
 		if (console_suspend_enabled || !uart_console(uport)) {
 			/* Protected by port mutex for now */
 			struct tty_struct *tty = port->tty;
+
 			ret = ops->startup(uport);
 			if (ret == 0) {
 				if (tty)