skeleton-rev.bbclass: bump version

Change-Id: I883e928d03adc989e530174113ca7931a56c56e4
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/classes/skeleton-rev.bbclass b/classes/skeleton-rev.bbclass
index ba1bf97..1c0bf00 100644
--- a/classes/skeleton-rev.bbclass
+++ b/classes/skeleton-rev.bbclass
@@ -1,2 +1,2 @@
-SRCREV ?= "1902990db9c36a8c2f4a57a4389c1a0c74658584"
+SRCREV ?= "aa4c3103125c2ba16c64efea9a6e43cae4217816"
 SKELETON_URI ?= "git://github.com/openbmc/skeleton"