Add IScheduleTest for VTS libhwbinder scheduler test

Add IScheduleTest.hal:
    send(cfg, callerSta)
cfg: 1 for verbose output
caller_status:  (caller_rt_priority <<16 )| caller_cpu

with the return value defined as:
((1 if no priority inheritance)<<16) | (1 if no cpu sync)
The implementation is in ScheduleTest.cpp

Bug:36705188
Test: sailfish/prebuilt kernel/oc-dev with the libhwbinder_latency
  vts test case
Change-Id: Ie2a837c8d0d4fa95c6fd0ebd50e76412cb808df8
diff --git a/tests/libhwbinder/1.0/IBenchmark.hal b/tests/libhwbinder/1.0/IBenchmark.hal
index 6b266e2..b3aa320 100644
--- a/tests/libhwbinder/1.0/IBenchmark.hal
+++ b/tests/libhwbinder/1.0/IBenchmark.hal
@@ -17,5 +17,5 @@
 package android.hardware.tests.libhwbinder@1.0;
 
 interface IBenchmark {
-  sendVec(vec<uint8_t> data) generates (vec<uint8_t> return_data);
+  sendVec(vec<uint8_t> data) generates (vec<uint8_t> data);
 };