[CI] Verify bazel buildifier is run and changes committed (#1700)

Ensures the buildifier (linter for bazel build files) is run and changes are pushed.

.github/workflows/bazelBuildAndTest.yml

@@ -68,6 +68,18 @@ jobs:
                    torch-mlir:ci \
                    bazel test @torch-mlir//test/...
 
+    - name: Verify buildifier was run (bazel lint)
+      run: |
+        docker run --rm \
+                   -v "$(pwd)":"/opt/src/torch-mlir" \
+                   -v "${HOME}/.cache/bazel":"/root/.cache/bazel" \
+                   torch-mlir:ci \
+                   bazel run @torch-mlir//:buildifier
+        if [ -n "$(git status --porcelain)" ]; then
+          echo "Please 'bazel run @torch-mlir//:buildifier' and commit changes."
+          exit 1
+        fi
+
     # Switch back bazel cache directory to user ownership
     # to allow GHA post-cache step to save cache without
     # permissions issue.

utils/bazel/torch-mlir-overlay/BUILD.bazel

@@ -465,13 +465,13 @@ cc_library(
     ],
     strip_include_prefix = "include",
     deps = [
+        ":TorchMLIRTorchConversionToMLProgram",
         ":TorchMLIRTorchToArith",
         ":TorchMLIRTorchToLinalg",
         ":TorchMLIRTorchToMhlo",
         ":TorchMLIRTorchToSCF",
         ":TorchMLIRTorchToTMTensor",
         ":TorchMLIRTorchToTosa",
-        ":TorchMLIRTorchConversionToMLProgram",
     ],
 )
 
@@ -487,6 +487,7 @@ cc_library(
         ":TorchMLIRTorchBackendTypeConversion",
         ":TorchMLIRTorchConversionDialect",
         ":TorchMLIRTorchConversionPassesIncGen",
+        ":TorchMLIRTorchConversionToMLProgram",
         ":TorchMLIRTorchDialect",
         ":TorchMLIRTorchPasses",
         ":TorchMLIRTorchToArith",
@@ -495,7 +496,6 @@ cc_library(
         ":TorchMLIRTorchToSCF",
         ":TorchMLIRTorchToTMTensor",
         ":TorchMLIRTorchToTosa",
-        ":TorchMLIRTorchConversionToMLProgram",
         "@llvm-project//mlir:ConversionPasses",
         "@llvm-project//mlir:FuncDialect",
         "@llvm-project//mlir:LinalgDialect",
@@ -781,8 +781,8 @@ cc_library(
         ":TorchMLIRTorchConversionDialect",
         "@llvm-project//mlir:ArithTransforms",
         "@llvm-project//mlir:LinalgDialect",
-        "@llvm-project//mlir:MLProgramDialect",
         "@llvm-project//mlir:LinalgTransforms",
+        "@llvm-project//mlir:MLProgramDialect",
         "@llvm-project//mlir:MathTransforms",
         "@llvm-project//mlir:MemRefDialect",
         "@llvm-project//mlir:Pass",