arm64: dts: qcom: sm8350: Rename the qmp node to power-controller

arm64: dts: qcom: sm8350: Rename the qmp node to power-controller

Use the generic DT node name "power-controller" for AOSS message ram
instead of the protocol name QMP(Qualcomm Messaging Protocol) since
it is used for power management requests.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/15005f1441594670adcd60a300c88e41d79cad27.1614669585.git.saiprakash.ranjan@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>