fix binary_ops buck deps (#11379)

Found that these seem to be missing while building internally

Author: swolchok

kernels/optimized/cpu/targets.bzl

@@ -45,7 +45,12 @@ def define_common_targets():
         srcs = ["binary_ops.cpp"],
         exported_headers = ["binary_ops.h"],
         visibility = ["//executorch/kernels/optimized/cpu/...", "@EXECUTORCH_CLIENTS",],
-        exported_deps = ["//executorch/runtime/core:core"],
+        exported_deps = [
+            "//executorch/runtime/core:core",
+            "//executorch/kernels/optimized:libvec",
+            "//executorch/kernels/portable/cpu:scalar_utils",
+            "//executorch/kernels/portable/cpu/util:broadcast_util",
+        ],
     )
 
     runtime.cxx_library(