Camera: update camera audio restriction API

Add dedicated get API for API review feedback.

Test: updated CTS pass
Bug: 140524714
Change-Id: I0559e24d6d9f4a2d9db6c0b6035eaf49bd41d950
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index df8c17c..7c77e16 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -261,8 +261,13 @@
 
         // set audio restriction from client
         // Will call into camera service and hold mServiceLock
-        virtual int32_t setAudioRestriction(int32_t mode);
+        virtual status_t setAudioRestriction(int32_t mode);
 
+        // Get current global audio restriction setting
+        // Will call into camera service and hold mServiceLock
+        virtual int32_t getServiceAudioRestriction() const;
+
+        // Get current audio restriction setting for this client
         virtual int32_t getAudioRestriction() const;
 
         static bool isValidAudioRestriction(int32_t mode);