drivers: Add references to xrt_prober_found_function_t in all relevant docs

src/xrt/drivers/hdk/hdk_interface.h

@@ -31,6 +31,7 @@ extern "C" {
  * Probing function for HDK devices.
  *
  * @ingroup drv_hdk
+ * @see xrt_prober_found_function_t
  */
 int
 hdk_found(struct xrt_prober *xp,

src/xrt/drivers/hydra/hydra_interface.h

@@ -29,6 +29,7 @@ extern "C" {
  * Probing function for Razer Hydra devices.
  *
  * @ingroup drv_hydra
+ * @see xrt_prober_found_function_t
  */
 int
 hydra_found(struct xrt_prober *xp,

src/xrt/drivers/psmv/psmv_interface.h

@@ -29,6 +29,7 @@ extern "C" {
  * Probing function for the PS Move devices.
  *
  * @ingroup drv_psmv
+ * @see xrt_prober_found_function_t
  */
 int
 psmv_found(struct xrt_prober *xp,

src/xrt/drivers/vive/vive_prober.h

@@ -43,6 +43,7 @@ extern "C" {
  * Probing function for Vive devices.
  *
  * @ingroup drv_vive
+ * @see xrt_prober_found_function_t
  */
 int
 vive_found(struct xrt_prober *xp,
@@ -57,6 +58,7 @@ vive_found(struct xrt_prober *xp,
  * Probing function for HTC Vive and Valve Index controllers.
  *
  * @ingroup drv_vive
+ * @see xrt_prober_found_function_t
  */
 int
 vive_controller_found(struct xrt_prober *xp,

src/xrt/drivers/wmr/wmr_interface.h

@@ -27,6 +27,7 @@ extern "C" {
  * Probing function for Windows Mixed Reality devices.
  *
  * @ingroup drv_wmr
+ * @see xrt_prober_found_function_t
  */
 int
 wmr_found(struct xrt_prober *xp,