Camera: reduce number of buffers allocated in PerformanceTest

Bug: 24009334
Change-Id: I0b6d5aabc6d797b366832c3edeae2c69303911cb
diff --git a/tests/tests/hardware/src/android/hardware/camera2/cts/PerformanceTest.java b/tests/tests/hardware/src/android/hardware/camera2/cts/PerformanceTest.java
index 4af88ca..2e001c7 100644
--- a/tests/tests/hardware/src/android/hardware/camera2/cts/PerformanceTest.java
+++ b/tests/tests/hardware/src/android/hardware/camera2/cts/PerformanceTest.java
@@ -66,7 +66,7 @@
     private static final int NUM_MAX_IMAGES = 4;
     private static final int NUM_RESULTS_WAIT = 30;
     private static final int[] REPROCESS_FORMATS = {ImageFormat.YUV_420_888, ImageFormat.PRIVATE};
-    private final int MAX_REPROCESS_IMAGES = 10;
+    private final int MAX_REPROCESS_IMAGES = 6;
     private final int MAX_JPEG_IMAGES = MAX_REPROCESS_IMAGES;
     private final int MAX_INPUT_IMAGES = MAX_REPROCESS_IMAGES;
     // ZSL queue depth should be bigger than the max simultaneous reprocessing capture request