Update Sunfish SVN to 12

Bug: 160158282
Change-Id: I1dce4ac5f56155f52b052bec5a6c8eebde912476
(cherry picked from commit bc2e1bbcdac46557223bad4027199b3bfa2ad087)
diff --git a/device.mk b/device.mk
index 123f623..0213177 100644
--- a/device.mk
+++ b/device.mk
@@ -878,7 +878,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-	ro.vendor.build.svn=11
+	ro.vendor.build.svn=12
 
 # ZRAM writeback
 PRODUCT_PROPERTY_OVERRIDES += \