hle: nvflinger: Add android Status flags to its own header.

src/core/hle/service/nvflinger/status.h

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright 2021 yuzu Emulator Project
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace android {
+
+enum class Status : s32 {
+    None = 0,
+    NoError = 0,
+    StaleBufferSlot = 1,
+    NoBufferAvailable = 2,
+    PresentLater = 3,
+    WouldBlock = -11,
+    NoMemory = -12,
+    Busy = -16,
+    NoInit = -19,
+    BadValue = -22,
+    InvalidOperation = -37,
+    BufferNeedsReallocation = 1,
+    ReleaseAllBuffers = 2,
+};
+DECLARE_ENUM_FLAG_OPERATORS(Status);
+
+} // namespace android