kfdtest: Reduce maximum number of events to 4095

The KFD patch "drm/amdkfd: Ignore bogus signals from MEC efficiently" will
reserve one signal slot that user mode cannot use any more. Update
the maximum event number in KFDEventTest to match that change.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Change-Id: Ic789e16b6d73dfea66ab51c5bbc075c8e8e2d052


[ROCm/ROCR-Runtime commit: 347bf6a03c]

projects/rocr-runtime/tests/kfdtest/src/KFDEventTest.cpp

@@ -228,7 +228,7 @@ exit:
 TEST_F(KFDEventTest, MeasureInterruptConsumption) {
     TEST_START(TESTPROFILE_RUNALL);
     QueueAndSignalBenchmark latencyBench(128);
-    QueueAndSignalBenchmark sustainedBench(4096);
+    QueueAndSignalBenchmark sustainedBench(4095);
 
     printf("\033[2J");
     while (true) {
@@ -246,7 +246,7 @@ TEST_F(KFDEventTest, MeasureInterruptConsumption) {
 TEST_F(KFDEventTest, SignalMaxEvents) {
     TEST_START(TESTPROFILE_RUNALL);
 
-    static const unsigned int MAX_EVENT_NUMBER = 4096;
+    static const unsigned int MAX_EVENT_NUMBER = 4095;
     uint64_t time, latency;
 
     QueueAndSignalBenchmark maxEventTest(MAX_EVENT_NUMBER);