am 1888de8e: merge from open-source master

Merge commit '1888de8e13f82f7af21bce267254fac124237afe' into kraken

* commit '1888de8e13f82f7af21bce267254fac124237afe':
  toolbox: add "uptime" command
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 5f72311..5404fd4 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -50,6 +50,7 @@
 	top \
 	iftop \
 	id \
+	uptime \
 	vmstat \
 	nandread \
 	uptime \