skeleton-rev.bbclass: bump version

Change-Id: Id649a330baeacaed7dd33cde407a697d02cd4cb9
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/classes/skeleton-rev.bbclass b/classes/skeleton-rev.bbclass
index 7b2d437..b625d69 100644
--- a/classes/skeleton-rev.bbclass
+++ b/classes/skeleton-rev.bbclass
@@ -1,2 +1,2 @@
-SRCREV ?= "8e745b5acba18f17840bc7ff21876efc7950bf1b"
+SRCREV ?= "89e6c91889cbd27d0857aa44438ede5e4eb7fd80"
 SKELETON_URI ?= "git://github.com/openbmc/skeleton"