Camera: Allow maxDigitalZoom to be less than maxZoomRatio

For concurrent camera, we allow the maximum digital zoom to be smaller
than the maximum zoom ratio. Adjust VTS test accordingly.

Test: camera VTS test
Bug: 151891611
Change-Id: I1d3813ed93faa83689dcb6a83490fae5581c602f
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index bf5fbfe..550a2e0 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -6942,8 +6942,11 @@
 
     float minZoomRatio = entry.data.f[0];
     float maxZoomRatio = entry.data.f[1];
-    if (maxDigitalZoom != maxZoomRatio) {
-        ADD_FAILURE() << "Maximum zoom ratio is different than maximum digital zoom!";
+    constexpr float FLOATING_POINT_THRESHOLD = 0.00001f;
+    if (maxDigitalZoom > maxZoomRatio + FLOATING_POINT_THRESHOLD) {
+        ADD_FAILURE() << "Maximum digital zoom " << maxDigitalZoom
+                      << " is larger than maximum zoom ratio " << maxZoomRatio << " + threshold "
+                      << FLOATING_POINT_THRESHOLD << "!";
     }
     if (minZoomRatio > maxZoomRatio) {
         ADD_FAILURE() << "Maximum zoom ratio is less than minimum zoom ratio!";