Add overlay for MiMix2S base on stock framework-res
diff --git a/overlay.mk b/overlay.mk
index 98ac3dc..5b99746 100644
--- a/overlay.mk
+++ b/overlay.mk
@@ -8,6 +8,7 @@
 	treble-overlay-devinputjack \
 	treble-overlay-oneplus-op6 \
 	treble-overlay-xiaomi-mi8 \
+	treble-overlay-xiaomi-mimix2s \
 	HardwareOverlayPicker \
 	QtiAudio \
 	Touchscreen