ci: Limit Intel CPU scaling frequency for performance tests

As an additional measure to mitigate thermal throttling, set the upper
limit for the CPU scaling frequency to 65% of maximum allowed by the
hardware.

The impact on the overall tests duration should be minimal since the
performance tests do not really put high load on the CPU.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Acked-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16164>
1 file changed