arm64: dts: qcom: sa8775p: Add CPUs to psci power domain

arm64: dts: qcom: sa8775p: Add CPUs to psci power domain

Commit 4f79d0deae37 ("arm64: dts: qcom: sa8775p: add CPU idle states")
already added cpu and cluster idle-states but have not added CPU devices
to psci power domain without which idle states do not get detected.

Add CPUs to psci power domain.

Fixes: 4f79d0deae37 ("arm64: dts: qcom: sa8775p: add CPU idle states")
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20241112-sa8775p_cpuidle-v1-1-66ff3ba72464@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>