[mlir][sparse] minor cleanup of include placement

[aartbik]

Summary

Rationale:
empty line between main include for this file
moved include that actually defines code into right section

Note that this revision started as breaking up ops/attrs even more
(for bug https://github.com/llvm/llvm-project/issues/52748), but due
the the connection in Dialect.initalize(), this cannot be split further).
All heavy lifting refactoring was already done by River in previous cleanup.

mlir/lib/Dialect/SparseTensor/IR/SparseTensorDialect.cpp

 //===- SparseTensorDialect.cpp - Sparse tensor dialect implementation -----===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #include "mlir/Dialect/SparseTensor/IR/SparseTensor.h"
+
 #include "mlir/IR/Builders.h"
 #include "mlir/IR/DialectImplementation.h"
 #include "mlir/IR/Matchers.h"
 #include "mlir/IR/OpImplementation.h"
 #include "llvm/ADT/TypeSwitch.h"
 
 using namespace mlir;
 using namespace mlir::sparse_tensor;
 
-#include "mlir/Dialect/SparseTensor/IR/SparseTensorOpsDialect.cpp.inc"
-
 //===----------------------------------------------------------------------===//
 // TensorDialect Attribute Methods.
 //===----------------------------------------------------------------------===//
 
 #define GET_ATTRDEF_CLASSES
 #include "mlir/Dialect/SparseTensor/IR/SparseTensorAttrDefs.cpp.inc"
 
 static bool acceptBitWidth(unsigned bitWidth) {
#include "mlir/Dialect/SparseTensor/IR/SparseTensorAttrDefs.cpp.inc"
   addOperations<
 #define GET_OP_LIST
 #include "mlir/Dialect/SparseTensor/IR/SparseTensorOps.cpp.inc"
       >();
 }
 
 #define GET_OP_CLASSES
 #include "mlir/Dialect/SparseTensor/IR/SparseTensorOps.cpp.inc"
+
+#include "mlir/Dialect/SparseTensor/IR/SparseTensorOpsDialect.cpp.inc"

utils/bazel/llvm-project-overlay/mlir/BUILD.bazel

gentbl_cc_library(
     ],
     tblgen = ":mlir-tblgen",
     td_file = "include/mlir/Dialect/SparseTensor/Transforms/Passes.td",
     deps = [":PassBaseTdFiles"],
 )
 
 cc_library(
     name = "SparseTensor",
-    srcs = glob([
-        "lib/Dialect/SparseTensor/IR/*.cpp",
-    ]),
+    srcs = ["lib/Dialect/SparseTensor/IR/SparseTensorDialect.cpp"],
     hdrs = ["include/mlir/Dialect/SparseTensor/IR/SparseTensor.h"],
     includes = ["include"],
     deps = [
         ":IR",
         ":SparseTensorAttrDefsIncGen",
         ":SparseTensorOpsIncGen",
         "//llvm:Support",
     ],