RK3566: add power optimizations (govtuning + PipeWire)

projects/ROCKNIX/devices/RK3566/filesystem/etc/profile.d/100-rk3566-govtuning

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+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026-present ROCKNIX (https://github.com/ROCKNIX)
+# RK3566: CPU DVFS drives I2C to PMIC; rate-limit ondemand to 300 ms (schedutil uses DTS clock-latency).
+
+ondemand() {
+  set_cpu_gov ondemand
+  set_dmc_gov ondemand
+  local gov="/sys/devices/system/cpu/cpufreq/ondemand"
+  if [ -d "$gov" ]; then
+    echo 300000 > "$gov/sampling_rate" 2>/dev/null
+    echo 80 > "$gov/up_threshold" 2>/dev/null
+    echo 10 > "$gov/sampling_down_factor" 2>/dev/null
+    echo 1 > "$gov/io_is_busy" 2>/dev/null
+  fi
+}

projects/ROCKNIX/devices/RK3566/filesystem/usr/share/pipewire/pipewire-pulse.conf.d/99-rk3566-power.conf

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+pulse.properties = {
+    pulse.idle.timeout = 5
+}

projects/ROCKNIX/devices/RK3566/filesystem/usr/share/pipewire/pipewire.conf.d/99-rk3566-power.conf

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+context.properties = {
+    default.clock.power-of-two-quantum = true
+    default.clock.min-quantum = 1024
+}