[PATCH] pm-graph: fix typo "hierachy" in comment

[Hemanth Selam]

Correct "hierachy" to "hierarchy", reported by scripts/checkpatch.pl using
the misspelling list in scripts/spelling.txt.  Only touches comments, no
code changes.

Assisted-by: Cursor:claude-opus-5
Signed-off-by: Hemanth Selam <hemanth.selam@xxxxxxxxx>
---
 tools/power/pm-graph/sleepgraph.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/power/pm-graph/sleepgraph.py b/tools/power/pm-graph/sleepgraph.py
index f6d172254829..c8bc3bed3f5a 100755
--- a/tools/power/pm-graph/sleepgraph.py
+++ b/tools/power/pm-graph/sleepgraph.py
@@ -1448,7 +1448,7 @@ class DevProps:
 
 # Class: DeviceNode
 # Description:
-#	 A container used to create a device hierachy, with a single root node
+#	 A container used to create a device hierarchy, with a single root node
 #	 and a tree of child nodes. Used by Data.deviceTopology()
 class DeviceNode:
 	def __init__(self, nodename, nodedepth):
-- 
2.48.1