Support fp8 dynamic quantization for fmha (#3206)

* Support qscale for dynamic quant, remove static quant

* Support hdim=256

* Remove bias test case for fp8

---------

Co-authored-by: Illia Silin <98187287+illsilin@users.noreply.github.com>
Co-authored-by: asleepzzz <hanwen.chang@amd.com>

example/ck_tile/01_fmha/quant.hpp

@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include <ostream>
+#include <string>
+#include "ck_tile/core.hpp"
+#include "ck_tile/ops/fmha.hpp"
+
+// keep sync with BlockAttentionQuantScaleEnum
+enum class quant_scale_enum
+{
+    no_scale  = 0,
+    pertensor = 1,
+};
+
+struct quant_scale_info
+{
+    quant_scale_enum type;
+
+    void serialize(std::ostream& os) const
+    {
+        if(type == quant_scale_enum::no_scale)
+            os << "n";
+        else if(type == quant_scale_enum::pertensor)
+            os << "pt";
+    }
+
+    static quant_scale_info decode(std::string str)
+    {
+        quant_scale_info info{quant_scale_enum::no_scale};
+        if(str == "n" || str == "0")
+        {
+            info.type = quant_scale_enum::no_scale;
+        }
+        else if(str == "pt" || str == "1")
+        {
+            info.type = quant_scale_enum::pertensor;
+        }
+        else
+        {
+            throw std::invalid_argument("invalid quant scale value: " + str);
+        }
+        return info;
+    }
+
+    friend std::ostream& operator<<(std::ostream& os, const quant_scale_info& qsi)
+    {
+        qsi.serialize(os);
+        return os;
+    }
+};