twrpme: add gitactivity changelog tag to device markdowns

Change-Id: I437a42c1b2ccd79b3f85ad0962c362680c28d171
diff --git a/_devices/sonyxperiaz1.markdown b/_devices/sonyxperiaz1.markdown
index 935ca6d..ea4b5e6 100644
--- a/_devices/sonyxperiaz1.markdown
+++ b/_devices/sonyxperiaz1.markdown
@@ -5,6 +5,7 @@
 downloadfolder: honami
 supportstatus: Current
 maintainer: sdtbarbarossa
+devicetree: https://github.com/TeamWin/android_device_sony_honami.git
 oem: Sony
 ddof: /dev/block/platform/msm_sdcc.1/by-name/FOTAKernel
 ---