Fixed qurt_eagle_travis build

Added missing stub function and added SDK 2 and 3 support.

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

src/platforms/qurt/stubs/stubs_posix.c

@@ -148,6 +148,11 @@ int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)
 	return -1;
 }
 
+int pthread_condattr_init(pthread_condattr_t *attr)
+{
+	return -1;
+}
+
 int fsync(int fd)
 {
 	return -1;