scsi: aic94xx: Fix a couple of kerneldoc formatting issues

Kerneldoc expects attributes/parameters to be in '@*.: ' format.

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

 drivers/scsi/aic94xx/aic94xx_dev.c:246: warning: Function parameter or member 'dev' not described in 'asd_init_sata_pm_port_ddb'
 drivers/scsi/aic94xx/aic94xx_dev.c:290: warning: Function parameter or member 'dev' not described in 'asd_init_sata_pm_ddb'

Link: https://lore.kernel.org/r/20200721164148.2617584-7-lee.jones@linaro.org
Cc: Luben Tuikov <luben_tuikov@adaptec.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/aic94xx/aic94xx_dev.c

@@ -236,7 +236,7 @@ static int asd_init_sata_pm_table_ddb(struct domain_device *dev)
 
 /**
  * asd_init_sata_pm_port_ddb -- SATA Port Multiplier Port
- * dev: pointer to domain device
+ * @dev: pointer to domain device
  *
  * For SATA Port Multiplier Ports we need to allocate one SATA Port
  * Multiplier Port DDB and depending on whether the target on it
@@ -281,7 +281,7 @@ static int asd_init_initiator_ddb(struct domain_device *dev)
 
 /**
  * asd_init_sata_pm_ddb -- SATA Port Multiplier
- * dev: pointer to domain device
+ * @dev: pointer to domain device
  *
  * For STP and direct-attached SATA Port Multipliers we need
  * one target port DDB entry and one SATA PM table DDB entry.