[SERIAL] kernel console should send CRLF not LFCR

Glen Turner reported that writing LFCR rather than the more
traditional CRLF causes issues with some terminals.

Since this aflicts many serial drivers, extract the common code
to a library function (uart_console_write) and arrange for each
driver to supply a "putchar" function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/dz.c

@@ -674,11 +674,12 @@ static void dz_reset(struct dz_port *dport)
 }
 
 #ifdef CONFIG_SERIAL_DZ_CONSOLE
-static void dz_console_put_char(struct dz_port *dport, unsigned char ch)
+static void dz_console_putchar(struct uart_port *port, int ch)
 {
+	struct dz_port *dport = (struct dz_port *)uport;
 	unsigned long flags;
 	int loops = 2500;
-	unsigned short tmp = ch;
+	unsigned short tmp = (unsigned char)ch;
 	/* this code sends stuff out to serial device - spinning its
 	   wheels and waiting. */
 
@@ -694,6 +695,7 @@ static void dz_console_put_char(struct dz_port *dport, unsigned char ch)
 
 	spin_unlock_irqrestore(&dport->port.lock, flags);
 }
+
 /*
  * -------------------------------------------------------------------
  * dz_console_print ()
@@ -710,11 +712,7 @@ static void dz_console_print(struct console *cons,
 #ifdef DEBUG_DZ
 	prom_printf((char *) str);
 #endif
-	while (count--) {
-		if (*str == '\n')
-			dz_console_put_char(dport, '\r');
-		dz_console_put_char(dport, *str++);
-	}
+	uart_console_write(&dport->port, str, count, dz_console_putchar);
 }
 
 static int __init dz_console_setup(struct console *co, char *options)