Don't list dynamic if a slot doesn't support DAP

If a slot doesn't support dynamic partitions, it's impossible to list
dynamic partitions on that slot. And we should just fall back to the
regular A/B in this case.

Bug: 180025432
Test: apply a retrofit package
Change-Id: I16c457b591e8c1d0cf1077a7be50dd9d8f61b8eb
diff --git a/common/dynamic_partition_control_stub.h b/common/dynamic_partition_control_stub.h
index 822fa1b..5ab82f5 100644
--- a/common/dynamic_partition_control_stub.h
+++ b/common/dynamic_partition_control_stub.h
@@ -50,7 +50,9 @@
   bool ResetUpdate(PrefsInterface* prefs) override;
 
   bool ListDynamicPartitionsForSlot(
-      uint32_t current_slot, std::vector<std::string>* partitions) override;
+      uint32_t slot,
+      uint32_t current_slot,
+      std::vector<std::string>* partitions) override;
   bool GetDeviceDir(std::string* path) override;
 
   bool VerifyExtentsForUntouchedPartitions(