Adjust comments.

The way the implementation worked out doesn't seem to be quite what was envisioned.  The _itf_count already exists as CFG_TUD_CDC (which is a max, but the relevant data is statically allocated anyway)  The array _itf_arr[] sort-of exists as  "cdcd_interface_t _cdcd_itf[]" in class/cdc/cdc_device.c; the indicides (instance or itf) are actually allocated quite late (as the host requests info)

Perhaps it's the way I have the user sketch declare each Adafruit_USBD_CDC instead of just "give me another USB Virtual Serial.."

Author: WestfW

src/arduino/Adafruit_USBD_CDC.cpp

@@ -33,11 +33,7 @@
 #include "Adafruit_USBD_CDC.h"
 #include "Adafruit_USBD_Device.h"
 
-// TODO Multiple instances supports
-//	static uint8_t _itf_count;
-//	static Adafruit_USBD_CDC* _itf_arr[]
-
-#define EPOUT 0x00
+#define EPOUT 0x00   // Starting endpoints; adjusted elsewhere as needed
 #define EPIN 0x80
 
 Adafruit_USBD_CDC Serial;