usb: gadget: rndis: fix class definitions for windows

The RNDIS gadget function has USB class of 2 and subclass
of 2, which matches "USB\Class_02&SubClass_02" in the
usbser.inf file in the Windows system, so the device is
initially detected as a COM port instead of RNDIS. This
is why we need to install RNDIS manually.

Refer to Defined Class Codes [1] and rndis_host of Linux [2],
this patch sets the RNDIS gadget with base class of 0xE0h
(Wireless Controller) and subclass of 0x01h and protocol
of 0x03h.

[1] https://www.usb.org/defined-class-codes
[2] http://www.embedded-os.de/en/proto-rndis_host.shtml

Change-Id: Ida366749f378a0ce770d707b4ba56b87f9e188cf
Signed-off-by: William Wu <william.wu@rock-chips.com>

drivers/usb/gadget/function/f_rndis.c

@@ -127,9 +127,9 @@ static struct usb_interface_descriptor rndis_control_intf = {
 	/* .bInterfaceNumber = DYNAMIC */
 	/* status endpoint is optional; this could be patched later */
 	.bNumEndpoints =	1,
-	.bInterfaceClass =	USB_CLASS_COMM,
-	.bInterfaceSubClass =   USB_CDC_SUBCLASS_ACM,
-	.bInterfaceProtocol =   USB_CDC_ACM_PROTO_VENDOR,
+	.bInterfaceClass =	USB_CLASS_WIRELESS_CONTROLLER,
+	.bInterfaceSubClass =	1,
+	.bInterfaceProtocol =   3,
 	/* .iInterface = DYNAMIC */
 };
 
@@ -188,9 +188,9 @@ rndis_iad_descriptor = {
 
 	.bFirstInterface =	0, /* XXX, hardcoded */
 	.bInterfaceCount = 	2,	// control + data
-	.bFunctionClass =	USB_CLASS_COMM,
-	.bFunctionSubClass =	USB_CDC_SUBCLASS_ETHERNET,
-	.bFunctionProtocol =	USB_CDC_PROTO_NONE,
+	.bFunctionClass =	USB_CLASS_WIRELESS_CONTROLLER,
+	.bFunctionSubClass =	1,
+	.bFunctionProtocol =	3,
 	/* .iFunction = DYNAMIC */
 };