scsi: bnx2i: Add missing descriptions for 'attr' parameter

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

 drivers/scsi/bnx2i/bnx2i_sysfs.c:40: warning: Function parameter or member 'attr' not described in 'bnx2i_show_sq_info'
 drivers/scsi/bnx2i/bnx2i_sysfs.c:60: warning: Function parameter or member 'attr' not described in 'bnx2i_set_sq_info'
 drivers/scsi/bnx2i/bnx2i_sysfs.c:96: warning: Function parameter or member 'attr' not described in 'bnx2i_show_ccell_info'
 drivers/scsi/bnx2i/bnx2i_sysfs.c:114: warning: Function parameter or member 'attr' not described in 'bnx2i_set_ccell_info'

Link: https://lore.kernel.org/r/20200723122446.1329773-9-lee.jones@linaro.org
Cc: QLogic-Storage-Upstream@qlogic.com
Cc: Anil Veerabhadrappa <anilgv@broadcom.com>
Cc: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/bnx2i/bnx2i_sysfs.c

@@ -30,6 +30,7 @@ static inline struct bnx2i_hba *bnx2i_dev_to_hba(struct device *dev)
 /**
  * bnx2i_show_sq_info - return(s currently configured send queue (SQ) size
  * @dev:	device pointer
+ * @attr:	device attribute (unused)
  * @buf:	buffer to return current SQ size parameter
  *
  * Returns current SQ size parameter, this paramater determines the number
@@ -47,6 +48,7 @@ static ssize_t bnx2i_show_sq_info(struct device *dev,
 /**
  * bnx2i_set_sq_info - update send queue (SQ) size parameter
  * @dev:	device pointer
+ * @attr:	device attribute (unused)
  * @buf:	buffer to return current SQ size parameter
  * @count:	parameter buffer size
  *
@@ -87,6 +89,7 @@ static ssize_t bnx2i_set_sq_info(struct device *dev,
 /**
  * bnx2i_show_ccell_info - returns command cell (HQ) size
  * @dev:	device pointer
+ * @attr:	device attribute (unused)
  * @buf:	buffer to return current SQ size parameter
  *
  * returns per-connection TCP history queue size parameter
@@ -103,6 +106,7 @@ static ssize_t bnx2i_show_ccell_info(struct device *dev,
 /**
  * bnx2i_get_link_state - set command cell (HQ) size
  * @dev:	device pointer
+ * @attr:	device attribute (unused)
  * @buf:	buffer to return current SQ size parameter
  * @count:	parameter buffer size
  *