libertas: Fix 'timer_list' stored private data related dot-rot

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

 drivers/net/wireless/marvell/libertas/main.c:727: warning: Function parameter or member 't' not described in 'lbs_cmd_timeout_handler'
 drivers/net/wireless/marvell/libertas/main.c:727: warning: Excess function parameter 'data' description in 'lbs_cmd_timeout_handler'
 drivers/net/wireless/marvell/libertas/main.c:761: warning: Function parameter or member 't' not described in 'lbs_tx_lockup_handler'
 drivers/net/wireless/marvell/libertas/main.c:761: warning: Excess function parameter 'data' description in 'lbs_tx_lockup_handler'
 drivers/net/wireless/marvell/libertas/main.c:784: warning: Function parameter or member 't' not described in 'auto_deepsleep_timer_fn'
 drivers/net/wireless/marvell/libertas/main.c:784: warning: Excess function parameter 'data' description in 'auto_deepsleep_timer_fn'

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200819072402.3085022-15-lee.jones@linaro.org

drivers/net/wireless/marvell/libertas/main.c

@@ -721,7 +721,7 @@ EXPORT_SYMBOL_GPL(lbs_resume);
  * lbs_cmd_timeout_handler - handles the timeout of command sending.
  * It will re-send the same command again.
  *
- * @data: &struct lbs_private pointer
+ * @t: Context from which to retrieve a &struct lbs_private pointer
  */
 static void lbs_cmd_timeout_handler(struct timer_list *t)
 {
@@ -755,7 +755,7 @@ static void lbs_cmd_timeout_handler(struct timer_list *t)
  * to the hardware. This is known to frequently happen with SD8686 when
  * waking up after a Wake-on-WLAN-triggered resume.
  *
- * @data: &struct lbs_private pointer
+ * @t: Context from which to retrieve a &struct lbs_private pointer
  */
 static void lbs_tx_lockup_handler(struct timer_list *t)
 {
@@ -777,7 +777,7 @@ static void lbs_tx_lockup_handler(struct timer_list *t)
 /**
  * auto_deepsleep_timer_fn - put the device back to deep sleep mode when
  * timer expires and no activity (command, event, data etc.) is detected.
- * @data:	&struct lbs_private pointer
+ * @t: Context from which to retrieve a &struct lbs_private pointer
  * returns:	N/A
  */
 static void auto_deepsleep_timer_fn(struct timer_list *t)