Fix-up

Summary:
Seeing verify-cria-jobs failing on fixup: D76002882

```
In file included from fbcode/executorch/kernels/optimized/cpu/binary_ops.cpp:9:
In file included from buck-out/v2/gen/fbcode/b140376391d042af/executorch/kernels/optimized/cpu/__binary_ops__/buck-headers/executorch/kernels/optimized/cpu/binary_ops.h:12:
In file included from buck-out/v2/gen/fbcode/b140376391d042af/executorch/kernels/portable/cpu/__scalar_utils__/buck-headers/executorch/kernels/portable/cpu/scalar_utils.h:15:
buck-out/v2/gen/fbcode/b140376391d042af/executorch/kernels/portable/cpu/__scalar_utils__/buck-headers/executorch/kernels/portable/cpu/selective_build.h:11:10: fatal error: 'executorch/runtime/core/exec_aten/exec_aten.h' file not found
```

Differential Revision: D76140319

Author: lucylq

kernels/optimized/cpu/targets.bzl

@@ -47,6 +47,7 @@ def define_common_targets():
         visibility = ["//executorch/kernels/optimized/cpu/...", "@EXECUTORCH_CLIENTS",],
         exported_deps = [
             "//executorch/runtime/core:core",
+            "//executorch/runtime/core/exec_aten:lib",
             "//executorch/kernels/optimized:libvec",
             "//executorch/kernels/portable/cpu:scalar_utils",
             "//executorch/kernels/portable/cpu/util:broadcast_util",