soc: qcom: aoss: Mark qmp_send() __printf()

soc: qcom: aoss: Mark qmp_send() __printf()

As reported by lkp, qmp_send() would benefit from a __printf() marker to
allow the compiler to further validate the passed parameters, fix this.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401100855.UYl3HPPt-lkp@intel.com/
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240119-aoss-printf-annotation-v1-1-27e2ceb8937a@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>