[bazel] fix: add dependency for SCFToEmitC due to c3aa158 (llvm#162535)

Adding dependency changes due to bazel build failing since
https://github.com/llvm/llvm-project/pull/143008/files

Author: kevinwkt

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

@@ -7800,6 +7800,7 @@ cc_library(
         ":SCFDialect",
         ":TransformUtils",
         ":Transforms",
+        "//llvm:Support",
     ],
 )