misc: genwqe: card_ddcb: Fix a variety of kerneldoc issues

misc: genwqe: card_ddcb: Fix a variety of kerneldoc issues

Including; demoting file header from kerneldoc to standard comment/
header, adding a variety of missing function argument documentation,
re-ordering of #defines i.e. not placed between kerneldoc headers
and the functions they are documenting and re-documenting of changed/
renamed arguments.

Fixes the following W=1 kernel build warnings:

 drivers/misc/genwqe/card_ddcb.c:83: warning: Function parameter or member 'queue' not described in 'queue_empty'
 drivers/misc/genwqe/card_ddcb.c:262: warning: Excess function parameter 'cd' description in 'RET_DDCB_APPENDED'
 drivers/misc/genwqe/card_ddcb.c:262: warning: Excess function parameter 'queue' description in 'RET_DDCB_APPENDED'
 drivers/misc/genwqe/card_ddcb.c:262: warning: Excess function parameter 'ddcb_no' description in 'RET_DDCB_APPENDED'
 drivers/misc/genwqe/card_ddcb.c:329: warning: Function parameter or member 'req' not described in 'copy_ddcb_results'
 drivers/misc/genwqe/card_ddcb.c:329: warning: Function parameter or member 'ddcb_no' not described in 'copy_ddcb_results'
 drivers/misc/genwqe/card_ddcb.c:364: warning: Function parameter or member 'queue' not described in 'genwqe_check_ddcb_queue'
 drivers/misc/genwqe/card_ddcb.c:565: warning: Function parameter or member 'queue' not described in 'get_next_ddcb'
 drivers/misc/genwqe/card_ddcb.c:565: warning: Function parameter or member 'num' not described in 'get_next_ddcb'
 drivers/misc/genwqe/card_ddcb.c:909: warning: Function parameter or member 'cmd' not described in '__genwqe_execute_raw_ddcb'
 drivers/misc/genwqe/card_ddcb.c:909: warning: Excess function parameter 'req' description in '__genwqe_execute_raw_ddcb'
 drivers/misc/genwqe/card_ddcb.c:972: warning: Function parameter or member 'cd' not described in 'genwqe_next_ddcb_ready'
 drivers/misc/genwqe/card_ddcb.c:1002: warning: Function parameter or member 'cd' not described in 'genwqe_ddcbs_in_flight'
 drivers/misc/genwqe/card_ddcb.c:1181: warning: Function parameter or member 'data' not described in 'genwqe_card_thread'
 drivers/misc/genwqe/card_ddcb.c:1308: warning: Function parameter or member 'cd' not described in 'queue_wake_up_all'
 drivers/misc/genwqe/card_ddcb.c:1333: warning: Function parameter or member 'cd' not described in 'genwqe_finish_queue'

Cc: Michael Jung <mijung@gmx.net>
Cc: Michael Ruettger <michael@ibmra.de>
Cc: Frank Haverkamp <haver@linux.ibm.com>
Cc: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200701083118.45744-2-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>