interconnect: qcom: rpm: Set QoS registers only once

The QoS registers are (or according to Qualcomm folks, on most
platforms) persistent until a full chip reboot. Move the QoS-setting
functions to the probe function so that we don't needlessly do it over
and over again.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230228-topic-qos-v8-4-ee696a2c15a9@linaro.org


Signed-off-by: Georgi Djakov <djakov@kernel.org>