A new API "androidGetThreadPriority"

Change-Id: I6baeead8c70460863343fd557250635fb1e6a170
diff --git a/libs/utils/Threads.cpp b/libs/utils/Threads.cpp
index 02c380b..38c4b35 100644
--- a/libs/utils/Threads.cpp
+++ b/libs/utils/Threads.cpp
@@ -368,6 +368,10 @@
     return rc;
 }
 
+int androidGetThreadPriority(pid_t tid) {
+    return getpriority(PRIO_PROCESS, tid);
+}
+
 int androidGetThreadSchedulingGroup(pid_t tid)
 {
     int ret = ANDROID_TGROUP_DEFAULT;