Help with adding the odd description where they have been omitted or
where the format isn't quite right.  Demote all function headers which
are lacking any attempt of describing their arguments.

Fixes the following W=1 kernel build warning(s):

 drivers/usb/chipidea/udc.c:645: warning: Function parameter or member 'hwreq' not described in '_hardware_dequeue'
 drivers/usb/chipidea/udc.c:645: warning: Excess function parameter 'gadget' description in '_hardware_dequeue'
 drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'ep' not described in 'ep_enable'
 drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'desc' not described in 'ep_enable'
 drivers/usb/chipidea/udc.c:1393: warning: Function parameter or member 'ep' not described in 'ep_disable'
 drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'ep' not described in 'ep_alloc_request'
 drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'gfp_flags' not described in 'ep_alloc_request'
 drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'ep' not described in 'ep_free_request'
 drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'req' not described in 'ep_free_request'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'ep' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'req' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'gfp_flags' not described in 'ep_queue'
 drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'ep' not described in 'ep_dequeue'
 drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'req' not described in 'ep_dequeue'
 drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'ep' not described in 'ep_set_halt'
 drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'value' not described in 'ep_set_halt'
 drivers/usb/chipidea/udc.c:1566: warning: Function parameter or member 'ep' not described in 'ep_set_wedge'
 drivers/usb/chipidea/udc.c:1586: warning: Function parameter or member 'ep' not described in 'ep_fifo_flush'
 drivers/usb/chipidea/udc.c:1610: warning: cannot understand function prototype: 'const struct usb_ep_ops usb_ep_ops = '
 drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member '_gadget' not described in 'ci_hdrc_gadget_connect'
 drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member 'is_active' not described in 'ci_hdrc_gadget_connect'
 drivers/usb/chipidea/udc.c:1780: warning: cannot understand function prototype: 'const struct usb_gadget_ops usb_gadget_ops = '
 drivers/usb/chipidea/udc.c:1931: warning: Function parameter or member 'gadget' not described in 'ci_udc_stop'
 drivers/usb/chipidea/udc.c:1965: warning: Function parameter or member 'ci' not described in 'udc_irq'
 drivers/usb/chipidea/udc.c:2095: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_destroy'
 drivers/usb/chipidea/udc.c:2144: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_init'

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200703174148.2749969-13-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>