Camera: Add timestamp associated with the dump.

Bug: 205851172

Test: Tested collecting dumpsys on Pixel 6 device.
Change-Id: I8d61cca23bc915a9adaecfcf82e6d1d8ece8f718
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index e4fb815..a965080 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -4450,8 +4450,9 @@
 void CameraService::dumpOpenSessionClientLogs(int fd,
         const Vector<String16>& args, const String8& cameraId) {
     auto clientDescriptor = mActiveClientManager.get(cameraId);
-    dprintf(fd, "  Device %s is open. Client instance dump:\n",
-        cameraId.string());
+    dprintf(fd, "  %s : Device %s is open. Client instance dump:\n",
+            getFormattedCurrentTime().string(),
+            cameraId.string());
     dprintf(fd, "    Client priority score: %d state: %d\n",
         clientDescriptor->getPriority().getScore(),
         clientDescriptor->getPriority().getState());