feat: cdc_vcom: add vcom_line_coding_updated callback

Signed-off-by: jiaoxy0 <jiaoxiaoyu0@163.com>

Author: jiaoxy0

components/legacy/usb/usbdevice/class/cdc_vcom.c

@@ -78,6 +78,8 @@ static rt_uint8_t vcom_thread_stack[VCOM_TASK_STK_SIZE];
 static struct rt_thread vcom_thread;
 static struct ucdc_line_coding line_coding;
 
+rt_weak void vcom_line_coding_updated(struct ucdc_line_coding *coding);
+
 #define CDC_TX_BUFSIZE    1024
 #define CDC_BULKIN_MAXSIZE (CDC_TX_BUFSIZE / 8)
 
@@ -416,6 +418,8 @@ static rt_err_t _cdc_set_line_coding_callback(udevice_t device, rt_size_t size)
 {
     LOG_D("_cdc_set_line_coding_callback");
 
+    vcom_line_coding_updated(&line_coding);
+
     dcd_ep0_send_status(device->dcd);
 
     return RT_EOK;