Fix _factory buck issue

Signed-off-by: Erik Lundell <[email protected]>
Change-Id: If014aa0fae6a0c16ace80a309b2bc490da69025c

Author: Erik-Lundell

backends/arm/TARGETS

@@ -106,3 +106,17 @@ runtime.python_library(
         "//caffe2:torch",
     ]
 )
+runtime.python_library(
+    name = "_factory",
+    srcs = [
+        "util/_factory.py"
+    ],
+    deps = [
+        ":ethosu",
+        ":vgf",
+        ":arm_compile_spec",
+        "//executorch/backends/arm/quantizer:lib",
+        "//executorch/exir/backend:operator_support",
+        "//executorch/exir/backend:compile_spec_schema",
+    ]
+)

backends/arm/test/TARGETS

@@ -1,3 +1,8 @@
+# Copyright 2025 Arm Limited and/or its affiliates.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 load(":targets.bzl", "define_arm_tests")
 
@@ -58,6 +63,7 @@ runtime.python_library(
         "//executorch/backends/arm/quantizer:lib",
         "//executorch/backends/arm/tosa:mapping",
         "//executorch/backends/arm:vgf",
+        "//executorch/backends/arm:_factory"
         "//executorch/devtools/backend_debug:delegation_info",
         "//executorch/exir/backend:operator_support",
         "fbsource//third-party/pypi/tabulate:tabulate",