scsi: atp870u: Fix naming and demote incorrect and non-conformant kernel-doc header

scsi: atp870u: Fix naming and demote incorrect and non-conformant kernel-doc header

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

 drivers/scsi/atp870u.c:623: warning: expecting prototype for atp870u_queuecommand(). Prototype was for atp870u_queuecommand_lck() instead
 drivers/scsi/atp870u.c:724: warning: Function parameter or member 'dev' not described in 'send_s870'
 drivers/scsi/atp870u.c:724: warning: Function parameter or member 'c' not described in 'send_s870'
 drivers/scsi/atp870u.c:724: warning: Excess function parameter 'host' description in 'send_s870'

Link: https://lore.kernel.org/r/20210312094738.2207817-27-lee.jones@linaro.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>
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>