soc: qcom: qmi: Fix a typo in a comment

The double word `client' in a comment is repeated, thus one of
them should be removed.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211113055358.206533-1-wangborong@cdjrlc.com