Use px4_config.h instead of nuttx/config.h

Modified code to use OS independent header file for config settings.

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

src/modules/commander/commander.cpp

@@ -42,7 +42,7 @@
  * @author Anton Babushkin <anton.babushkin@me.com>
  */
 
-#include <nuttx/config.h>
+#include <px4_config.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>

src/modules/commander/commander_params.c

@@ -42,7 +42,7 @@
  * @author Julian Oes <julian@oes.ch>
  */
 
-#include <nuttx/config.h>
+#include <px4_config.h>
 #include <systemlib/param/param.h>
 
 PARAM_DEFINE_FLOAT(TRIM_ROLL, 0.0f);