twrpme: add gitactivity changelog tag to device markdowns

Change-Id: I437a42c1b2ccd79b3f85ad0962c362680c28d171
diff --git a/_devices/sonyxperiazr.markdown b/_devices/sonyxperiazr.markdown
index 3e2554c..bc932cc 100644
--- a/_devices/sonyxperiazr.markdown
+++ b/_devices/sonyxperiazr.markdown
@@ -5,6 +5,7 @@
 downloadfolder: dogo
 supportstatus: Current
 maintainer: Chippa-a
+devicetree: https://github.com/TeamWin/android_device_sony_dogo.git
 oem: Sony
 ddof: /dev/block/platform/msm_sdcc.1/by-name/FOTAKernel
 ---