[DataPathTest] Skip the test if less than 3 devices

Bug: 140202697
Test: Verified the changes
Change-Id: I4181083c34ce9216fa535d5068ba3693ad176d83
diff --git a/acts/tests/google/wifi/aware/functional/DataPathTest.py b/acts/tests/google/wifi/aware/functional/DataPathTest.py
index 3f68376..cf939bf 100644
--- a/acts/tests/google/wifi/aware/functional/DataPathTest.py
+++ b/acts/tests/google/wifi/aware/functional/DataPathTest.py
@@ -2159,8 +2159,8 @@
 
     The NDPs are all OPEN (no encryption).
     """
-        asserts.assert_true(
-            len(self.android_devices) >= 3,
+        asserts.skip_if(
+            len(self.android_devices) < 3,
             'A minimum of 3 devices is needed to run the test, have %d' % len(
                 self.android_devices))