Add API to update mix rule for registered AudioMix-es

Bug: 293874525
Test: atest AudioHostTest AudioServiceHostTest
Change-Id: I5d254ccd91b5e6c82ed786d4ebd66a265d0faf4c
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index 94b48ea..ff29305 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -198,6 +198,8 @@
     binder::Status getPhoneState(AudioMode* _aidl_return) override;
     binder::Status registerPolicyMixes(const std::vector<media::AudioMix>& mixes,
                                        bool registration) override;
+    binder::Status updatePolicyMixes(
+        const ::std::vector<::android::media::AudioMixUpdate>& updates) override;
     binder::Status setUidDeviceAffinities(int32_t uid,
                                           const std::vector<AudioDevice>& devices) override;
     binder::Status removeUidDeviceAffinities(int32_t uid) override;