dm: serial: Remove duplicated carriage return character

As the handling for carriage return and line feed is done in the common
DM driver serial-uclass.c, such handling in some serial DM drivers is
duplicated and need to be removed.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

drivers/serial/serial_arc.c

@@ -68,9 +68,6 @@ static int arc_serial_putc(struct udevice *dev, const char c)
 	struct arc_serial_platdata *plat = dev->platdata;
 	struct arc_serial_regs *const regs = plat->reg;
 
-	if (c == '\n')
-		arc_serial_putc(dev, '\r');
-
 	while (!(readb(&regs->status) & UART_TXEMPTY))
 		;
 

drivers/serial/serial_lpuart.c

@@ -77,9 +77,6 @@ static int _lpuart_serial_getc(struct lpuart_fsl *base)
 
 static void _lpuart_serial_putc(struct lpuart_fsl *base, const char c)
 {
-	if (c == '\n')
-		_lpuart_serial_putc(base, '\r');
-
 	while (!(__raw_readb(&base->us1) & US1_TDRE))
 		WATCHDOG_RESET();
 
@@ -198,9 +195,6 @@ static int _lpuart32_serial_getc(struct lpuart_fsl *base)
 
 static void _lpuart32_serial_putc(struct lpuart_fsl *base, const char c)
 {
-	if (c == '\n')
-		_lpuart32_serial_putc(base, '\r');
-
 	while (!(in_be32(&base->stat) & STAT_TDRE))
 		WATCHDOG_RESET();