Integrated cmake_hexagon for qurt build

Still a WIP since the IDL file needs to be replace with the
muorb IDL file.

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

src/platforms/qurt/px4_layer/main.cpp

@@ -102,7 +102,6 @@ static void process_commands(map<string, px4_main_t> &apps, const char *cmds)
 	vector<string> appargs;
 	int i = 0;
 	const char *b = cmds;
-	bool found_first_char = false;
 	char arg[256];
 
 	// Eat leading whitespace

src/platforms/qurt/px4_layer/px4_qurt_tasks.cpp

@@ -363,7 +363,6 @@ static void timer_cb(void *data)
 
 int px4_sem_timedwait(px4_sem_t *sem, const struct timespec *ts)
 {
-	void *result;
 	work_s _hpwork = {};
 
 	// Create a timer to unblock