Enable Pressure Stall Information PSI (#4279)

Enable Pressure Stall Information PSI for more accurate detection of resource shortages.

The psi feature identifies and quantifies the disruptions caused by CPU, memory or IO  resource shortages and the time impact it has on complex workloads or even entire systems.

- https://facebookmicrosites.github.io/psi/docs/overview
- https://www.kernel.org/doc/html/latest/accounting/psi.html

Author: ajfriesen

buildroot-external/kernel/v6.12.y/hassos.config

@@ -12,6 +12,8 @@ CONFIG_PREEMPT=y
 # CONFIG_PREEMPT_VOLUNTARY is not set
 # CONFIG_DEBUG_PREEMPT is not set
 
+CONFIG_PSI=y
+
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y