USB core: fix recent kernel-doc warnings

Fix new kernel-doc warnings in usb core:

Warning(drivers/usb/core/usb.c:79): No description found for parameter 'config'
Warning(drivers/usb/core/usb.c:79): No description found for parameter 'iface_num'
Warning(drivers/usb/core/usb.c:79): No description found for parameter 'alt_num'
Warning(drivers/usb/core/hcd.c:1622): No description found for parameter 'udev'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 6dac3b8..0495fa6 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1597,7 +1597,9 @@
 }
 
 /**
- * Check whether a new bandwidth setting exceeds the bus bandwidth.
+ * usb_hcd_alloc_bandwidth - check whether a new bandwidth setting exceeds
+ *				the bus bandwidth
+ * @udev: target &usb_device
  * @new_config: new configuration to install
  * @cur_alt: the current alternate interface setting
  * @new_alt: alternate interface setting that is being installed
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 2fb4204..0daff0d 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -66,9 +66,9 @@
 /**
  * usb_find_alt_setting() - Given a configuration, find the alternate setting
  * for the given interface.
- * @config - the configuration to search (not necessarily the current config).
- * @iface_num - interface number to search in
- * @alt_num - alternate interface setting number to search for.
+ * @config: the configuration to search (not necessarily the current config).
+ * @iface_num: interface number to search in
+ * @alt_num: alternate interface setting number to search for.
  *
  * Search the configuration's interface cache for the given alt setting.
  */