net: neterion: fix doc warnings in s2io.c

Add description for may_sleep to fix the W=1 warnings:

  drivers/net/ethernet/neterion/s2io.c:1110: warning: Function parameter or member 'may_sleep' not described in 'init_tti'
  drivers/net/ethernet/neterion/s2io.c:3335: warning: Function parameter or member 'may_sleep' not described in 'wait_for_cmd_complete'
  drivers/net/ethernet/neterion/s2io.c:4881: warning: Function parameter or member 'may_sleep' not described in 's2io_set_multicast'
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/neterion/s2io.c

@@ -1101,6 +1101,8 @@ static int s2io_print_pci_mode(struct s2io_nic *nic)
  *  @nic: device private variable
  *  @link: link status (UP/DOWN) used to enable/disable continuous
  *  transmit interrupts
+ *  @may_sleep: parameter indicates if sleeping when waiting for
+ *  command complete
  *  Description: The function configures transmit traffic interrupts
  *  Return Value:  SUCCESS on success and
  *  '-1' on failure
@@ -3323,6 +3325,8 @@ static void s2io_updt_xpak_counter(struct net_device *dev)
  *  @addr: address
  *  @busy_bit: bit to check for busy
  *  @bit_state: state to check
+ *  @may_sleep: parameter indicates if sleeping when waiting for
+ *  command complete
  *  Description: Function that waits for a command to Write into RMAC
  *  ADDR DATA registers to be completed and returns either success or
  *  error depending on whether the command was complete or not.
@@ -4868,6 +4872,8 @@ static struct net_device_stats *s2io_get_stats(struct net_device *dev)
 /**
  *  s2io_set_multicast - entry point for multicast address enable/disable.
  *  @dev : pointer to the device structure
+ *  @may_sleep: parameter indicates if sleeping when waiting for command
+ *  complete
  *  Description:
  *  This function is a driver entry point which gets called by the kernel
  *  whenever multicast addresses must be enabled/disabled. This also gets