Add pthread_setschedprio() prototype

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@139 42af7a65-404d-4744-a932-0658087f49c3

include/pthread.h

@@ -263,6 +263,7 @@ EXTERN int pthread_getschedparam(pthread_t thread, int *policy,
                                  struct sched_param *param);
 EXTERN int pthread_setschedparam(pthread_t thread, int policy,
                                  const struct sched_param *param);
+EXTERN int pthread_setschedprio(pthread_t thread, int prio);
 
 /* Thread-specific Data Interfaces */