soc: qcom: smd-rpm: Fix kerneldoc

Fix W=1 compile warnings (invalid kerneldoc):

    drivers/soc/qcom/smd-rpm.c:35: warning: Function parameter or member 'dev' not described in 'qcom_smd_rpm'
    drivers/soc/qcom/smd-rpm.c:99: warning: Function parameter or member 'state' not described in 'qcom_rpm_smd_write'

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200729074415.28393-2-krzk@kernel.org


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