arm64: dts: qcom: sdm845: Disable pwrkey on Cheza

We don't use the power key from the PMIC on Cheza. Disable this node so
that we don't probe the driver for this device.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200121171806.9933-1-swboyd@chromium.org


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