[LTP] [PATCH v2] power_management: rewrite runpwtests04.sh in C

[Andrea Cervesato]

Hi Jinseok,

for some reasons I didn't receive your [3] in my ML, but I have
the CI results and the patch-set needs to be fixed because it
doesn't apply:

https://github.com/linux-test-project/ltp/actions/runs/27367707128

Please send v4.

Thanks,
--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com