Add SystemUi to the SDK build.

Change-Id: I84eb98c0b3fdaeb9e06c934ea5f4bdcf078cb7f1
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index 50e2539..aa5170a 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -18,6 +18,7 @@
 PRODUCT_PROPERTY_OVERRIDES :=
 
 PRODUCT_PACKAGES := \
+	SystemUI \
 	AccountAndSyncSettings \
 	Camera \
 	Calculator \