renamed "syscall" module to "svc" (more accurate naming)

src/core/hle/hle.h

@@ -34,7 +34,7 @@ struct ModuleDef {
 
 void RegisterModule(std::string name, int num_functions, const FunctionDef *func_table);
 
-void CallSyscall(u32 opcode);
+void CallSVC(u32 opcode);
 
 void EatCycles(u32 cycles);