Add Redmi 6 and Redmi 6A

these phone have almost same configs.

Conflicts:
	overlay.mk

Change-Id: Iee2e03e7c342131b32095dc6abb813db930aa943
diff --git a/overlay.mk b/overlay.mk
index ca88c27..735b778 100644
--- a/overlay.mk
+++ b/overlay.mk
@@ -34,8 +34,6 @@
 	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 \
@@ -52,7 +50,12 @@
 	treble-overlay-xiaomi-mia2 \
 	treble-overlay-xiaomi-mimax3 \
 	treble-overlay-xiaomi-redminote5 \
-	TrebleApp
+	treble-overlay-xiaomi-mi8ud \
+	treble-overlay-xiaomi-mi8lite \
+	treble-overlay-xiaomi-redmi6 \
+	treble-overlay-xiaomi-redmi6a \
+	HardwareOverlayPicker \
+	QtiAudio
 
 # Huawei Camera
 PRODUCT_COPY_FILES += \