Camera: Add module init placeholder

Change-Id: I6d0e4bde4e8cd26db26268fe7be43094c71a71db
diff --git a/camera/QCamera2/HAL3/QCamera3Hal.cpp b/camera/QCamera2/HAL3/QCamera3Hal.cpp
index 86d52ca..eff72ff 100644
--- a/camera/QCamera2/HAL3/QCamera3Hal.cpp
+++ b/camera/QCamera2/HAL3/QCamera3Hal.cpp
@@ -49,5 +49,6 @@
     get_vendor_tag_ops: NULL,
     open_legacy: NULL,
     set_torch_mode: NULL,
+    init: NULL,
     reserved: {0}
 };