Linux: enabled commander module

The commander module now compiles for Linux.

state_machine_helper_linux.cpp iterates over the virtual devices vs
all devices under /dev as per NuttX when disabling publishing.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

src/modules/systemlib/cpuload.c

@@ -61,6 +61,8 @@
 
 #ifdef CONFIG_SCHED_INSTRUMENTATION
 
+#ifdef __PX4_NUTTX
+
 __EXPORT void sched_note_start(FAR struct tcb_s *tcb);
 __EXPORT void sched_note_stop(FAR struct tcb_s *tcb);
 __EXPORT void sched_note_switch(FAR struct tcb_s *pFromTcb, FAR struct tcb_s *pToTcb);
@@ -167,4 +169,7 @@ void sched_note_switch(FAR struct tcb_s *pFromTcb, FAR struct tcb_s *pToTcb)
 	}
 }
 
+#else
+__EXPORT struct system_load_s system_load;
+#endif
 #endif /* CONFIG_SCHED_INSTRUMENTATION */

src/modules/systemlib/cpuload.h

@@ -37,13 +37,15 @@
 
 __BEGIN_DECLS
 
-#include <nuttx/sched.h>
+#include <sched.h>
 
 struct system_load_taskinfo_s {
 	uint64_t total_runtime;			///< Runtime since start (start_time - total_runtime)/(start_time - current_time) = load
 	uint64_t curr_start_time;		///< Start time of the current scheduling slot
 	uint64_t start_time;			///< FIRST start time of task
+#ifdef __PX4_NUTTX
 	FAR struct tcb_s *tcb;			///<
+#endif
 	bool valid;						///< Task is currently active / valid
 };