scsi: isci: port_config: Fix a bunch of doc-rot and demote abuses

scsi: isci: port_config: Fix a bunch of doc-rot and demote abuses

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

 drivers/scsi/isci/port_config.c:76: warning: Cannot understand  *
 drivers/scsi/isci/port_config.c:105: warning: Cannot understand  *
 drivers/scsi/isci/port_config.c:148: warning: Cannot understand  *
 drivers/scsi/isci/port_config.c:376: warning: Cannot understand  *
 drivers/scsi/isci/port_config.c:607: warning: Function parameter or member 'ihost' not described in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Function parameter or member 'port_agent' not described in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Function parameter or member 'iport' not described in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Function parameter or member 'iphy' not described in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Excess function parameter 'scic' description in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Excess function parameter 'sci_port' description in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:607: warning: Excess function parameter 'sci_phy' description in 'sci_apc_agent_link_up'
 drivers/scsi/isci/port_config.c:623: warning: Cannot understand  *
 drivers/scsi/isci/port_config.c:701: warning: Cannot understand  *

Link: https://lore.kernel.org/r/20210317091230.2912389-26-lee.jones@linaro.org
Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>