This has been the recommended default for arm and arm64 since since
v5.9 (upstream commit f259eab3ea0e7ed73db91f6358274dd3a9a27d79).
* gnu/packages/aux-files/linux-libre/5.10-arm.conf,
gnu/packages/aux-files/linux-libre/5.10-arm.conf,
gnu/packages/aux-files/linux-libre/5.11-arm.conf,
gnu/packages/aux-files/linux-libre/5.11-arm.conf: Enable
CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL, disable
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE.