嵌入式Linux，cat1模组，EC200S-CN内核驱动开发

一、Add VID and PID，kernel/drivers/usb/serial/option.c。

static const struct usb_device_id option_ids[] = {
...
#if 1 //Added by Quectel
	{ USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */
	{ USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */
	{ USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25/EC20 R2.0 */
	{ USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */
	{ USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */
	{ USB_DEVICE(0x2C7C, 0x0191) }, /* Quectel EG91 */
	{ USB_DEVICE(0x2C7C, 0x0195) }, /* Quectel EG95 */
	{ USB_DEVICE(0x2C7C, 0x0306) }, /* Quectel EG06/EP06/EM06 */
	{ USB_DEVICE(0x2C7C, 0x0296) }, /* Quectel BG96 */

	{ USB_DEVICE(0x2C7C, 0x0435) }, /* Quectel AG35 */
	{ USB_DEVICE(0x2C7C, 0x0512) }, /* Quectel EG12/EG18 */
	{ USB_DEVICE(0x2C7C, 0x6026) }, /* Quectel EC200 */
	{ USB_DEVICE(0x2C7C, 0x6120) }, /* Quectel UC200 */
	{ USB_DEVICE(0x2C7C, 0x6000) }, /* Quectel EC200/UC200 */
	{ USB_DEVICE(0x2C7C, 0x6002) }, /* Quectel EC200S