Add camera.ranchu.* to target/product/emulator.mk

This is for QEMU2 camera support in
the new emulator.

Change-Id: I036773719eff97619594e9d9ac161c10b5e218b5
(cherry picked from commit 6a3bbdce10aae72727d97ab09d90c967cfd51b9c)
diff --git a/target/product/emulator.mk b/target/product/emulator.mk
index 146e0a8..e78aef1 100644
--- a/target/product/emulator.mk
+++ b/target/product/emulator.mk
@@ -39,6 +39,8 @@
     qemud \
     camera.goldfish \
     camera.goldfish.jpeg \
+    camera.ranchu \
+    camera.ranchu.jpeg \
     lights.goldfish \
     gps.goldfish \
     fingerprint.goldfish \