Add HwModule::getRoutes method

This complements an existing setter, and is needed
for testing.

Bug: 205808571
Test: atest HalAudioV6_0GeneratorTest
Test: atest HalAudioV7_0GeneratorTest
Test: atest VtsHalAudioV6_0TargetTest
Test: atest VtsHalAudioV7_0TargetTest
Change-Id: Iabe9d02be93dfee329e2a12f125fbe4d8b934105
Merged-In: Iabe9d02be93dfee329e2a12f125fbe4d8b934105
diff --git a/services/audiopolicy/common/managerdefinitions/include/HwModule.h b/services/audiopolicy/common/managerdefinitions/include/HwModule.h
index 9ba745a..54b3408 100644
--- a/services/audiopolicy/common/managerdefinitions/include/HwModule.h
+++ b/services/audiopolicy/common/managerdefinitions/include/HwModule.h
@@ -80,6 +80,7 @@
 
     sp<DeviceDescriptor> getRouteSinkDevice(const sp<AudioRoute> &route) const;
     DeviceVector getRouteSourceDevices(const sp<AudioRoute> &route) const;
+    const AudioRouteVector& getRoutes() const { return mRoutes; }
     void setRoutes(const AudioRouteVector &routes);
 
     status_t addOutputProfile(const sp<IOProfile> &profile);