Bump to 6.6 weekly

Change-Id: Ia5b76dcf062b99cac6291de8884056a09450989b
Signed-off-by: Josue Rivera <prbassplayer@gmail.com>
diff --git a/config/common.mk b/config/common.mk
index 7d92fd3..dd87538 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -158,7 +158,7 @@
 # KitKat SlimKat freeze code
 PRODUCT_VERSION_MAJOR = 4.4.4
 PRODUCT_VERSION_MINOR = build
-PRODUCT_VERSION_MAINTENANCE = 6.4
+PRODUCT_VERSION_MAINTENANCE = 6.6
 ifdef SLIM_BUILD_EXTRA
     SLIM_POSTFIX := -$(SLIM_BUILD_EXTRA)
 endif