SVC: Implemented svcCreateSemaphore

ToDo: Implement svcReleaseSemaphore
* Some testing against hardware needed

src/core/hle/kernel/semaphore.h

@@ -0,0 +1,22 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+#include "core/hle/kernel/kernel.h"
+
+namespace Kernel {
+
+/**
+ * Creates a semaphore
+ * @param initial_count number of reserved entries in the semaphore
+ * @param max_count maximum number of holders the semaphore can have
+  * @param name Optional name of semaphore
+ * @return Handle to newly created object
+ */
+Handle CreateSemaphore(u32 initial_count, u32 max_count, const std::string& name = "Unknown");
+
+} // namespace