Add default visibility to HAL_MODULE_INFO_SYM

HAL could not be found by the CameraService.

BUG: 29336732
Change-Id: Ic4e509269f7f4171a9a79ce7a319fdc355e06514
diff --git a/modules/camera/3_4/V4L2CameraHAL.cpp b/modules/camera/3_4/V4L2CameraHAL.cpp
index 511d8a1..ad5fbde 100644
--- a/modules/camera/3_4/V4L2CameraHAL.cpp
+++ b/modules/camera/3_4/V4L2CameraHAL.cpp
@@ -162,7 +162,7 @@
   .open = v4l2_camera_hal::open_dev
 };
 
-camera_module_t HAL_MODULE_INFO_SYM = {
+camera_module_t HAL_MODULE_INFO_SYM __attribute__ ((visibility("default"))) = {
   .common = {
     .tag =                 HARDWARE_MODULE_TAG,
     .module_api_version =  CAMERA_MODULE_API_VERSION_2_4,