Broadcast radio 1.x default implementation: let's support background scan for real.

Bug: 69860743
Test: VTS, instrumentation
Change-Id: Ia636795494c88a82edf681adaa403e3b70f77814
diff --git a/broadcastradio/1.2/default/BroadcastRadio.cpp b/broadcastradio/1.2/default/BroadcastRadio.cpp
index 5164e47..74f6589 100644
--- a/broadcastradio/1.2/default/BroadcastRadio.cpp
+++ b/broadcastradio/1.2/default/BroadcastRadio.cpp
@@ -107,7 +107,7 @@
     prop10.numTuners = 1;
     prop10.numAudioSources = 1;
     prop10.supportsCapture = false;
-    prop11.supportsBackgroundScanning = false;
+    prop11.supportsBackgroundScanning = true;
     prop11.supportedProgramTypes = hidl_vec<uint32_t>({
         static_cast<uint32_t>(ProgramType::AM), static_cast<uint32_t>(ProgramType::FM),
         static_cast<uint32_t>(ProgramType::AM_HD), static_cast<uint32_t>(ProgramType::FM_HD),