omni: add back ExactCalculator

Change-Id: I8a5671a019dfe2d6416d168f8de47e1d27725fa2
diff --git a/config/packages.mk b/config/packages.mk
index 4ea16f8..deb8f10 100644
--- a/config/packages.mk
+++ b/config/packages.mk
@@ -14,7 +14,8 @@
     OmniRecord \
     WallpaperPicker2 \
     ThemePicker \
-    webview
+    webview \
+    ExactCalculator
 
 PRODUCT_PACKAGES += \
      OmniOverlayStub