serial: omap-serial: remove flag from serial_omap_rdi()

The local 'flag' variable carries only TTY_NORMAL. So use that constant
directly and drop the variable.

Signed-off-by: Jiri Slaby (SUSE) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/serial/omap-serial.c

···
 static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr)
 {
 	unsigned char ch = 0;
-	unsigned int flag;
 
 	if (!(lsr & UART_LSR_DR))
 		return;
···
 		return;
 	}
 
-	flag = TTY_NORMAL;
 	up->port.icount.rx++;
 
 	if (uart_handle_sysrq_char(&up->port, ch))
 		return;
 
-	uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+	uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, TTY_NORMAL);
 }
 
 /**