Add MULTI_FINGER_SWIPE motion classification

Bug: 251196347
Test: check events received by a custom tester app, and touches shown by
      pointer location overlay
Change-Id: Ice71843404400e73f8170ae108e2e2c89cc1d9bd
diff --git a/native/android/input.cpp b/native/android/input.cpp
index 812db0f..5e5ebed 100644
--- a/native/android/input.cpp
+++ b/native/android/input.cpp
@@ -297,6 +297,8 @@
             return AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS;
         case android::MotionClassification::TWO_FINGER_SWIPE:
             return AMOTION_EVENT_CLASSIFICATION_TWO_FINGER_SWIPE;
+        case android::MotionClassification::MULTI_FINGER_SWIPE:
+            return AMOTION_EVENT_CLASSIFICATION_MULTI_FINGER_SWIPE;
     }
 }