usb: chipidea: brush up structure definitions

Get rid of trailing comments in the structure definitions in favor of
kernel-doc.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h
index 3a9e669..e839a2b 100644
--- a/drivers/usb/chipidea/udc.h
+++ b/drivers/usb/chipidea/udc.h
@@ -59,15 +59,24 @@
 	struct usb_ctrlrequest   setup;
 } __attribute__ ((packed));
 
-/* Extension of usb_request */
+/**
+ * struct ci13xxx_req - usb request representation
+ * @req: request structure for gadget drivers
+ * @map: is the request mapped
+ * @queue: link to QH list
+ * @ptr: transfer descriptor for this request
+ * @dma: dma address for the transfer descriptor
+ * @zptr: transfer descriptor for the zero packet
+ * @zdma: dma address of the zero packet's transfer descriptor
+ */
 struct ci13xxx_req {
-	struct usb_request   req;
-	unsigned             map;
-	struct list_head     queue;
-	struct ci13xxx_td   *ptr;
-	dma_addr_t           dma;
-	struct ci13xxx_td   *zptr;
-	dma_addr_t           zdma;
+	struct usb_request	req;
+	unsigned		map;
+	struct list_head	queue;
+	struct ci13xxx_td	*ptr;
+	dma_addr_t		dma;
+	struct ci13xxx_td	*zptr;
+	dma_addr_t		zdma;
 };
 
 #ifdef CONFIG_USB_CHIPIDEA_UDC