Update drv_uart.c

fix indentataions

bsp/ls2kdev/drivers/drv_uart.c

@@ -52,7 +52,8 @@ static rt_err_t ls2k_uart_set_buad(struct rt_serial_device *serial,struct serial
     UART_LSB(uart_dev->base)= brtc & 0xff;
     UART_MSB(uart_dev->base)= brtc >> 8;
 
-	if(((((short)UART_MSB(uart_dev->base))<<8) | UART_LSB(uart_dev->base)) != brtc) ret=RT_ERROR;
+    if(((((short)UART_MSB(uart_dev->base))<<8) | UART_LSB(uart_dev->base)) != brtc) 
+	    ret=RT_ERROR;
 	
     UART_LCR(uart_dev->base)= CFCR_8BITS;// Back to normal
     UART_MCR(uart_dev->base)= MCR_IENABLE/* | MCR_DTR | MCR_RTS*/;