Enlarge buffer size for direct report testing

This change is part of "Sensor direct report test - gralloc support".

Bug: 67439052
Test: vts test no longer fail on sailfish device
Change-Id: Id67a2a181b2d8847e2b1b9dbe46f5186e97e8563
Merged-In: Ibe1d076c24dc2cfe61dfd19aa5055c9075aa9e14
diff --git a/sensors/1.0/vts/functional/VtsHalSensorsV1_0TargetTest.cpp b/sensors/1.0/vts/functional/VtsHalSensorsV1_0TargetTest.cpp
index a6f6852..e4736bc 100644
--- a/sensors/1.0/vts/functional/VtsHalSensorsV1_0TargetTest.cpp
+++ b/sensors/1.0/vts/functional/VtsHalSensorsV1_0TargetTest.cpp
@@ -1224,7 +1224,7 @@
 void SensorsHidlTest::testDirectReportOperation(
     SensorType type, SharedMemType memType, RateLevel rate, const SensorEventsChecker &checker) {
   constexpr size_t kEventSize = static_cast<size_t>(SensorsEventFormatOffset::TOTAL_LENGTH);
-  constexpr size_t kNEvent = 500;
+  constexpr size_t kNEvent = 4096;
   constexpr size_t kMemSize = kEventSize * kNEvent;
 
   constexpr float kNormalNominal = 50;