[CK_TILE] fmha fwd splitkv optimization for decode (seqlen_q=1) (#1789)

* Update license year

* Add initial code to override decode problem

* Fix splitkv traits/args overriding error

* Reshape and transpose lse for decode

* Remove debug code

* Prettify example code

* Use better function name

* Add kMergeNumHeadGroupsSeqLenQ flag

Kernel user can use this switch to turn on/off optimization for
some problem sizes

* Add missing flag declarations

* Default turn off kMergeNumHeadGroupsSeqLenQ in codegen

* Group similar statements together

* Remove assumption of seqlen_q=1

* Remove kMergeNumHeadGroupsSeqLenQ from splitkv combine kernel

* Support kMergeNumHeadGroupsSeqLenQ=true in fmha splitkv kernel

* Run kMergeNumHeadGroupsSeqLenQ=true kernels when need

* Fix group mode block skip logics

* Undo changes of normal fwd kernel

* Update in GridSize() and using GridSize() for splitkv kernel (#1799)

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Co-authored-by: Qianfeng <qianfeng.zhang@amd.com>

include/ck_tile/ops/rmsnorm2d.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 

include/ck_tile/ops/smoothquant.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 

include/ck_tile/ops/softmax.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 

include/ck_tile/ops/topk.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 

include/ck_tile/ops/topk_softmax.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once