d/ulv2: Convert Ultraleap driver create function to helper

src/xrt/drivers/ultraleap_v2/ulv2_driver.cpp

@@ -379,13 +379,8 @@ ulv2_device_destroy(struct xrt_device *xdev)
 	u_device_free(&ulv2d->base);
 }
 
-int
-ulv2_found(struct xrt_prober *xp,
-           struct xrt_prober_device **devices,
-           size_t device_count,
-           size_t index,
-           cJSON *attached_data,
-           struct xrt_device **out_xdev)
+xrt_result_t
+ulv2_create_device(struct xrt_device **out_xdev)
 {
 	enum u_device_alloc_flags flags = U_DEVICE_ALLOC_NO_FLAGS;
 
@@ -444,11 +439,11 @@ ulv2_found(struct xrt_prober *xp,
 
 	out_xdev[0] = &ulv2d->base;
 
-	return 1;
+	return XRT_SUCCESS;
 
 cleanup:
 	ulv2_device_destroy(&ulv2d->base);
-	return 0;
+	return XRT_ERROR_DEVICE_CREATION_FAILED;
 }
 
 } // extern "C"

src/xrt/drivers/ultraleap_v2/ulv2_interface.h

@@ -35,14 +35,8 @@ extern "C" {
  * @ingroup drv_ulv2
  * @see xrt_prober_found_func_t
  */
-int
-ulv2_found(struct xrt_prober *xp,
-           struct xrt_prober_device **devices,
-           size_t device_count,
-           size_t index,
-           cJSON *attached_data,
-           struct xrt_device **out_xdev);
-
+xrt_result_t
+ulv2_create_device(struct xrt_device **out_xdev);
 #ifdef __cplusplus
 }
 #endif

src/xrt/targets/common/target_lists.c

@@ -146,11 +146,6 @@ struct xrt_prober_entry target_entry_list[] = {
     {HDK_VID, HDK_PID, hdk_found, "OSVR HDK", "osvr"},
 #endif // XRT_BUILD_DRIVER_HDK
 
-
-#ifdef XRT_BUILD_DRIVER_ULV2
-    {ULV2_VID, ULV2_PID, ulv2_found, "Leap Motion Controller", "ulv2"},
-#endif
-
 #ifdef XRT_BUILD_DRIVER_DEPTHAI
     {DEPTHAI_VID, DEPTHAI_PID, depthai_3dof_device_found, "DepthAI Device as Head Tracker", "depthai"},
 #endif