scsi: ufs: ufs-qcom: Demote nonconformant kerneldoc headers

scsi: ufs: ufs-qcom: Demote nonconformant kerneldoc headers

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

 drivers/scsi/ufs/ufs-qcom.c:253: warning: Function parameter or member 'hba' not described in 'ufs_qcom_host_reset'
 drivers/scsi/ufs/ufs-qcom.c:383: warning: Function parameter or member 'hba' not described in 'ufs_qcom_cfg_timers'
 drivers/scsi/ufs/ufs-qcom.c:383: warning: Function parameter or member 'gear' not described in 'ufs_qcom_cfg_timers'
 drivers/scsi/ufs/ufs-qcom.c:383: warning: Function parameter or member 'hs' not described in 'ufs_qcom_cfg_timers'
 drivers/scsi/ufs/ufs-qcom.c:383: warning: Function parameter or member 'rate' not described in 'ufs_qcom_cfg_timers'
 drivers/scsi/ufs/ufs-qcom.c:383: warning: Function parameter or member 'update_link_startup_timer' not described in 'ufs_qcom_cfg_timers'
 drivers/scsi/ufs/ufs-qcom.c:1738: error: Cannot parse struct or union!

Link: https://lore.kernel.org/r/20200723122446.1329773-4-lee.jones@linaro.org
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>