fix compile error for fmha_fwd example (#21)

include/ck/tile_program/block_tile_pipeline/block_fmha_pipeline_qkvs_default_policy.hpp

@@ -12,6 +12,7 @@
 #include "ck/tile_program/tile/tile_elementwise.hpp"
 #include "ck/tile_program/tile/tile_gemm_shape.hpp"
 #include "ck/tile_program/warp_tile/warp_gemm.hpp"
+#include "ck/tile_program/block_tile_pipeline/block_gemm_pipeline_problem.hpp"
 #include "ck/tile_program/block_tile/block_gemm_areg_bsmem_creg_v1.hpp"
 #include "ck/tile_program/block_tile/block_gemm_asmem_bsmem_creg_v1.hpp"
 
@@ -229,7 +230,7 @@ struct BlockFmhaPipelineQKVSDefaultPolicy
     __host__ __device__ static constexpr auto GetQKBlockGemm()
     {
         using BlockGemmProblem =
-            BlockGemmASmemBSmemCRegV1Problem<typename Problem::QDataType,
+            BlockGemmPipelineProblem<typename Problem::QDataType,
                                      typename Problem::KDataType,
                                      typename Problem::SaccDataType,
                                      Problem::kBlockSize,
@@ -245,7 +246,7 @@ struct BlockFmhaPipelineQKVSDefaultPolicy
     __host__ __device__ static constexpr auto GetKVBlockGemm()
     {
         using BlockGemmProblem =
-            BlockGemmARegBSmemCRegV1Problem<typename Problem::PDataType,
+            BlockGemmPipelineProblem<typename Problem::PDataType,
                                      typename Problem::VDataType,
                                      typename Problem::OaccDataType,
                                      Problem::kBlockSize,