usb: host: ohci-at91: Demote kerneldoc headers down to basic comment blocks

Neither usb_hcd_at91_probe() nor usb_hcd_at91_remove()'s function
headers reach the standards required of a kerneldoc entry. Only
one attempt at describing an argument was made, as it is not
correct (we're removing that too to save confusion).

Fixes the following kernel build warning(s):

drivers/usb/host/ohci-at91.c:166: warning: Function parameter or member 'driver' not described in 'usb_hcd_at91_probe'
drivers/usb/host/ohci-at91.c:166: warning: Function parameter or member 'pdev' not described in 'usb_hcd_at91_probe'
drivers/usb/host/ohci-at91.c:259: warning: Function parameter or member 'hcd' not described in 'usb_hcd_at91_remove'
drivers/usb/host/ohci-at91.c:259: warning: Function parameter or member 'pdev' not described in 'usb_hcd_at91_remove'
drivers/usb/host/ohci-at91.c:259: warning: Excess function parameter 'dev' description in 'usb_hcd_at91_remove'

Cc: Alan Stern <[e-mail]>
Cc: Nicolas Ferre <[e-mail]>
Cc: Alexandre Belloni <[e-mail]>
Cc: Ludovic Desroches <[e-mail]>
Cc: Thibaut VARENE <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/host/ohci-at91.c

···
 /* always called with process context; sleeping is OK */
 
 
-/**
+/*
  * usb_hcd_at91_probe - initialize AT91-based HCDs
  * Context: !in_interrupt()
  *
···
 
 /* may be called with controller, bus, and devices active */
 
-/**
+/*
  * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs
- * @dev: USB Host Controller being removed
  * Context: !in_interrupt()
  *
  * Reverses the effect of usb_hcd_at91_probe(), first invoking