Added video submodule for xboxkrnl and xam modules.

src/xenia/kernel/modules/xam/sources.gypi

@@ -10,5 +10,7 @@
     'xam_state.cc',
     'xam_state.h',
     'xam_table.inc',
+    'xam_video.cc',
+    'xam_video.h',
   ],
 }

src/xenia/kernel/modules/xam/xam_module.cc

@@ -42,6 +42,7 @@ XamModule::XamModule(Runtime* runtime) :
 
   // Register all exported functions.
   RegisterInfoExports(export_resolver_.get(), xam_state.get());
+  RegisterVideoExports(export_resolver_.get(), xam_state.get());
 }
 
 XamModule::~XamModule() {

src/xenia/kernel/modules/xam/xam_private.h

@@ -31,6 +31,7 @@ extern XamState* shared_xam_state_;
 
 // Registration functions, one per file.
 void RegisterInfoExports(ExportResolver* export_resolver, XamState* state);
+void RegisterVideoExports(ExportResolver* export_resolver, XamState* state);
 
 
 }  // namespace xam