Enable calendar widget as lock widget

Change-Id: If549495901b3ded53771a3a6356fc5a9017d239d
diff --git a/Android.mk b/Android.mk
index d12c8e7..2ca66c0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -24,7 +24,7 @@
 		android-common-chips \
 		android-support-v4 \
 		calendar-common
-LOCAL_SDK_VERSION := 16
+LOCAL_SDK_VERSION := current
 
 LOCAL_RESOURCE_DIR := $(addprefix $(LOCAL_PATH)/, $(res_dirs))