src/lib/paramters: Add a new interface library for protected build user side

Implement an interface for protected build to access parameters.

The implementation only does IOCTL calls to the kernel, where the parameters
live.

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>

src/lib/parameters/parameters.cpp

@@ -72,6 +72,11 @@ using namespace time_literals;
 /* Include functions common to user and kernel sides */
 #include "parameters_common.cpp"
 
+#if defined(__PX4_NUTTX) && !defined(CONFIG_BUILD_FLAT)
+#include <px4_platform/board_ctrl.h>
+#include "parameters_ioctl.h"
+#endif
+
 #if defined(FLASH_BASED_PARAMS)
 #include "flashparams/flashparams.h"
 #else
@@ -192,6 +197,10 @@ param_init()
 	param_find_perf = perf_alloc(PC_COUNT, "param: find");
 	param_get_perf = perf_alloc(PC_COUNT, "param: get");
 	param_set_perf = perf_alloc(PC_ELAPSED, "param: set");
+
+#if defined(__PX4_NUTTX) && !defined(CONFIG_BUILD_FLAT)
+	px4_register_boardct_ioctl(_PARAMIOCBASE, param_ioctl);
+#endif
 }
 
 /**