Update Crosshatch SVN to 50

Bug: 182937985
Change-Id: Ie97bb330fd871cd338ea99e0621d381e329165d7
(cherry picked from commit 8c702fb76cfcc45ba43d47f66d01101856aa5f7d)
diff --git a/device.mk b/device.mk
index f8bf381..0642526 100644
--- a/device.mk
+++ b/device.mk
@@ -841,7 +841,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-    ro.vendor.build.svn=49
+    ro.vendor.build.svn=50
 
 PRODUCT_PRODUCT_PROPERTIES += \
     ro.adb.secure=1