fix PARAM_PREFIX for boards with px4io (CONFIG_BOARD_IO)

src/drivers/camera_trigger/CMakeLists.txt

@@ -30,10 +30,18 @@
 # POSSIBILITY OF SUCH DAMAGE.
 #
 ############################################################################
+
+set(PARAM_PREFIX PWM_MAIN)
+
+if(CONFIG_BOARD_IO)
+	set(PARAM_PREFIX PWM_AUX)
+endif()
+
 px4_add_module(
 	MODULE drivers__camera_trigger
 	MAIN camera_trigger
 	COMPILE_FLAGS
+		-DPARAM_PREFIX="${PARAM_PREFIX}"
 	SRCS
 		camera_trigger.cpp
 		interfaces/src/camera_interface.cpp

src/drivers/camera_trigger/interfaces/src/camera_interface.cpp

@@ -35,12 +35,6 @@
 #include <px4_platform_common/log.h>
 #include <board_config.h>
 
-#ifdef BOARD_WITH_IO
-# define PARAM_PREFIX "PWM_AUX"
-#else
-# define PARAM_PREFIX "PWM_MAIN"
-#endif
-
 void CameraInterface::get_pins()
 {
 	// Set all pins as invalid