bin: add cpu_performance/cpu_powersave helpers to set cpu scaling_governor

Signed-off-by: Alejandro Mery <amery@geeks.cl>

files/bin/cpu_performance

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -eu
+case "${0%%*/}" in
+	*_performance) governor=performance;;
+	*_powersave) governor=powersave;;
+	*) exit 1;;
+esac
+
+for f in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
+	sudo -- sh -c "echo $governor > '$f'"
+done

files/bin/cpu_powersave

@@ -0,0 +1 @@
+cpu_performance