Documentation for newly added struct (#2051)

tile_engine/ops/gemm/gemm_host_api.hpp

@@ -54,6 +54,17 @@ struct DataTypeTraits<ck_tile::pk_int4_t>
     static constexpr const char* name = "pk_int4_t";
 };
 
+/**
+ * @brief  trait for GEMM kernel
+    * @param pipeline:   pipeline name
+    * @param scheduler:  scheduler name
+    * @param epilogue:  epilogue name
+    * @param kPadM:     padding for M dimension
+    * @param kPadN:     padding for N dimension
+    * @param kPadK:     padding for K dimension 
+ * 
+ */
+
 struct KernelTraits
 {
     std::string pipeline;
@@ -173,7 +184,11 @@ void permute_vectors_i4x4_b(Tensor& tensor)
     }
 }
 
-// verification code
+/**
+ * @brief Function to verify the kernel output with reference implementation on CPU/GPU
+ * 
+ */
+
 template <typename ADataType,
           typename BDataType,
           typename AccDataType,