soc: qcom: wcnss_ctrl: Demote non-conformant struct header and fix function headers

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

 drivers/soc/qcom/wcnss_ctrl.c:81: warning: Function parameter or member 'major' not described in 'wcnss_version_resp'
 drivers/soc/qcom/wcnss_ctrl.c:81: warning: Function parameter or member 'minor' not described in 'wcnss_version_resp'
 drivers/soc/qcom/wcnss_ctrl.c:81: warning: Function parameter or member 'version' not described in 'wcnss_version_resp'
 drivers/soc/qcom/wcnss_ctrl.c:81: warning: Function parameter or member 'revision' not described in 'wcnss_version_resp'
 drivers/soc/qcom/wcnss_ctrl.c:122: warning: Function parameter or member 'rpdev' not described in 'wcnss_ctrl_smd_callback'
 drivers/soc/qcom/wcnss_ctrl.c:122: warning: Function parameter or member 'priv' not described in 'wcnss_ctrl_smd_callback'
 drivers/soc/qcom/wcnss_ctrl.c:122: warning: Function parameter or member 'addr' not described in 'wcnss_ctrl_smd_callback'
 drivers/soc/qcom/wcnss_ctrl.c:122: warning: Excess function parameter 'channel' description in 'wcnss_ctrl_smd_callback'
 drivers/soc/qcom/wcnss_ctrl.c:272: warning: Function parameter or member 'priv' not described in 'qcom_wcnss_open_channel'

Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201103152838.1290217-19-lee.jones@linaro.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>