ipmi: Add a maintenance mode sysfs file

So you can see if it's in maintenance mode and see how long is left.

Signed-off-by: Corey Minyard <corey@minyard.net>
Tested-by: Frederick Lawler <fred@cloudflare.com>
This commit is contained in:
Corey Minyard 2025-08-07 17:55:08 -05:00
commit 627118470f