Add Mi 8 series

- add dipper
- add ursa and change outdated functions
- add equuleus (notch same as ursa)
- add platina (without notch)
diff --git a/overlay.mk b/overlay.mk
index 98d7433..ca88c27 100644
--- a/overlay.mk
+++ b/overlay.mk
@@ -34,6 +34,8 @@
 	treble-overlay-xiaomi-mi8 \
 	treble-overlay-xiaomi-mi8ee \
 	treble-overlay-xiaomi-mi8se \
+	treble-overlay-xiaomi-mi8ud \
+	treble-overlay-xiaomi-mi8lite \
 	treble-overlay-xiaomi-mimix2s \
 	treble-overlay-xiaomi-redmi6pro \
 	treble-overlay-xiaomi-mia2lite \