Camera: Add module init placeholder

Change-Id: I074337f5bc986b426f745f161da6582b25c9328b
diff --git a/camera/QCamera2/QCamera2Hal.cpp b/camera/QCamera2/QCamera2Hal.cpp
index 3fb360a..115d36d 100644
--- a/camera/QCamera2/QCamera2Hal.cpp
+++ b/camera/QCamera2/QCamera2Hal.cpp
@@ -50,5 +50,6 @@
     get_vendor_tag_ops: qcamera::QCamera3VendorTags::get_vendor_tag_ops,
     open_legacy: qcamera::QCamera2Factory::open_legacy,
     set_torch_mode: qcamera::QCamera2Factory::set_torch_mode,
+    init: NULL,
     reserved: {0}
 };