Bump crosshatch SVN to 22

bug:141626492
(cherry picked from commit a435773ab73499cab489860bce1eef1158fbfbcf)

Change-Id: Ibdf6c54c10d1e20d7e5b1bab5690bb6de038be3c
diff --git a/device.mk b/device.mk
index 49010d3..22a2d71 100644
--- a/device.mk
+++ b/device.mk
@@ -820,7 +820,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-    ro.vendor.build.svn=20
+    ro.vendor.build.svn=22
 
 PRODUCT_PRODUCT_PROPERTIES += \
     ro.adb.secure=1