- Add some comments about the origin of some USB descriptors.

MFC after:	7 days

sys/dev/usb/template/usb_template_audio.c

@@ -95,7 +95,12 @@ USB_MAKE_STRING_DESC(STRING_AUDIO_PRODUCT, string_audio_product);
 
 /* prototypes */
 
-/* Audio Mixer description structures */
+/*
+ * Audio Mixer description structures
+ *
+ * Some of the audio descriptors were dumped
+ * from a Creative Labs USB audio device.
+ */
 
 static const uint8_t audio_raw_desc_0[] = {
 	0x0a, 0x24, 0x01, 0x00, 0x01, 0xa9, 0x00, 0x02,

sys/dev/usb/template/usb_template_kbd.c

@@ -94,6 +94,8 @@ static const struct usb_temp_interval keyboard_intr_interval = {
 	.bInterval[USB_SPEED_HIGH] = 2 * 8,
 };
 
+/* The following HID descriptor was dumped from a HP keyboard. */
+
 static uint8_t keyboard_hid_descriptor[] = {
 	0x05, 0x01, 0x09, 0x06, 0xa1, 0x01, 0x05, 0x07,
 	0x19, 0xe0, 0x29, 0xe7, 0x15, 0x00, 0x25, 0x01,

sys/dev/usb/template/usb_template_mouse.c

@@ -82,6 +82,8 @@ USB_MAKE_STRING_DESC(STRING_PRODUCT, string_product);
 
 /* prototypes */
 
+/* The following HID descriptor was dumped from a HP mouse. */
+
 static uint8_t mouse_hid_descriptor[] = {
 	0x05, 0x01, 0x09, 0x02, 0xa1, 0x01, 0x09, 0x01,
 	0xa1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29, 0x03,