namespace sts -> namespace ams

namespace sts::ams -> ams::exosphere, ams::.

This is to facilitate future use of ams:: namespace code in
mesosphere, as we'll want to include ams::util, ams::result, ams::svc...

stratosphere/fatal/source/fatal_debug.cpp

@@ -17,7 +17,7 @@
 #include "fatal_debug.hpp"
 #include "fatal_config.hpp"
 
-namespace sts::fatal::srv {
+namespace ams::fatal::srv {
 
     namespace {