cm: Include ExactCalculator in the build

Change-Id: Ib5e29677c9a3c375d46839cf32596df58a5be8c1
diff --git a/config/common.mk b/config/common.mk
index 6bf7046..889833d 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -147,7 +147,8 @@
     CMUpdater \
     CMAccount \
     CyanogenSetupWizard \
-    CMSettingsProvider
+    CMSettingsProvider \
+    ExactCalculator
 
 # CM Platform Library
 PRODUCT_PACKAGES += \