skeleton-rev.bbclass: bump version

Change-Id: Ib10b767fa793f7505ca824d4b11abe3bbefce81c
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/classes/skeleton-rev.bbclass b/classes/skeleton-rev.bbclass
index 87e4a22..98fc12d 100644
--- a/classes/skeleton-rev.bbclass
+++ b/classes/skeleton-rev.bbclass
@@ -1,2 +1,2 @@
-SRCREV ?= "3ab5436a5c89ec5d89c0cb7e6497ddef7bc92555"
+SRCREV ?= "c9972aebe02f1aa4b7eaabf202695e4df101545f"
 SKELETON_URI ?= "git://github.com/openbmc/skeleton"