rt2x00: fix rt2x00usb_register_read() comment

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2x00usb.h

@@ -232,7 +232,7 @@ static inline int rt2x00usb_eeprom_read(struct rt2x00_dev *rt2x00dev,
 }
 
 /**
- * rt2x00usb_regbusy_read - Read 32bit register word
+ * rt2x00usb_register_read - Read 32bit register word
  * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
  * @offset: Register offset
  * @value: Pointer to where register contents should be stored