pygoscelis: Set the timer frequency to 100 Hz

Trying out a lower time frequency and check if it has any influence at all
after a short discussion in IRC about it.
To me it looks as there is no real impact on my hardware with this
After a debate in IRC and some reading it looks to me as there is no general
rule but many people with opinions. Therefore I don’t expect a difference in
overall power consumption or responsiveness, but will just try it out.

I set up a quick and dirty battery test:
- display brightness at 35 %
- wifi on
- bluetooth off
- some default background deamons running (cron, chrony/NTP, syncthing)
- one termina (konsole) open
- that energy monitor from KDE open
- CPU boost disabled with 'echo 0 > /sys/devices/system/cpu/cpufreq/boost'
- verified that temperatures are low enough that the fan is off

Both setups (5.14.11-T14s with CONFIG_HZ_1000=y vs. 5.14.12-T14s
with CONFIG_HZ_100=y) showed values around 5.6 W, down to 5.2 W, up to > 30W
as I called emerge to check if it's not just a display glitch.

As this is a Notebook I don't have to care at all about some video cards and
TV frequencies that are mentioned in various threads.

To end this commit message I’d like to share a quote that amused me during my
mini-research:

„864Hz is indeed the win - I won't use a kernel wihout that option anymore.”
 - User “creidiki”, forums.gentoo.org

pygoscelis-config

@@ -443,11 +443,11 @@ CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS=y
 CONFIG_EFI=y
 CONFIG_EFI_STUB=y
 # CONFIG_EFI_MIXED is not set
-# CONFIG_HZ_100 is not set
+CONFIG_HZ_100=y
 # CONFIG_HZ_250 is not set
 # CONFIG_HZ_300 is not set
-CONFIG_HZ_1000=y
-CONFIG_HZ=1000
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=100
 CONFIG_SCHED_HRTICK=y
 # CONFIG_KEXEC is not set
 # CONFIG_KEXEC_FILE is not set