power_controller: leds: support latest dts changes

https://git.debu.gs/gitweb/?p=bmcd;a=commitdiff;h=a6fecb0d14e1eb0dc032e9cbe40b704f4fc6a86a
code, git.debu.gs | 2024-02-16 09:01:10 +0000 GMT | No.1455 
power_controller: leds: support latest dts changes

A fallback is implemented to support both old and new definitions of the
status and power sysfs paths
  • [DH] src/api/legacy.rs
  • [DH] src/app/bmc_application.rs
  • [DH] src/app/event_application.rs
  • [DH] src/hal/power_controller.rs