Add all services to the Service namespace

Previously there was a split where some of the services were in the
Service namespace and others were not.

src/core/hw/y2r.h

@@ -2,13 +2,16 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-namespace Y2R_U {
+#pragma once
+
+namespace Service {
+namespace Y2R {
 struct ConversionConfiguration;
 }
+}
 
 namespace HW {
 namespace Y2R {
-
-void PerformConversion(Y2R_U::ConversionConfiguration& cvt);
+void PerformConversion(Service::Y2R::ConversionConfiguration& cvt);
 }
 }