[PATCH] Documentation: Add description to stack_order interface

[Wardenjohn]

Update description of klp_patch stack_order sysfs interface to
livepatch ABI documentation.

Signed-off-by: Wardenjohn <zhangwarden@xxxxxxxxx>

diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch
index a5df9b4910dc..9cad725a69c7 100644
--- a/Documentation/ABI/testing/sysfs-kernel-livepatch
+++ b/Documentation/ABI/testing/sysfs-kernel-livepatch
@@ -47,6 +47,14 @@ Description:
 		disabled when the feature is used. See
 		Documentation/livepatch/livepatch.rst for more information.
 
+What:           /sys/kernel/livepatch/<patch>/stack_order
+Date:           Sep 2024
+KernelVersion:  6.12.0
+Contact:        live-patching@xxxxxxxxxxxxxxx
+Description:
+		This attribute record the stack order of this livepatch module
+		applied to the running system.
+
 What:		/sys/kernel/livepatch/<patch>/<object>
 Date:		Nov 2014
 KernelVersion:	3.19.0
-- 
2.18.2