Fix cortex_m test_pass_manager buck listing via Arm dep fixes (pytorch#23024)

Summary:
The cortex_m `test_pass_manager` target failed test listing because it
consumes the Arm `_passes:passes` target directly, whose Buck dep
closure was incomplete, and `quantization_annotator` relied on a
package-level import unavailable under the split Buck targets. Complete
the dep closures and use a direct submodule import instead.

Authored with Muse Code.

Differential Revision: D121261247




cc @digantdesai @freddan80 @per @zingo @oscarandersson8218 @mansnils
@Sebastian-Larsson @robell @rascani

Author: JakeStevens

backends/arm/_passes/BUCK

@@ -58,6 +58,8 @@ fbcode_target(
     deps = [
         ":core",
         ":arm_pass_manager_base" if runtime.is_oss else ":arm_pass_manager_fb",
+        "//executorch/backends/arm:arm_vela",
+        "//executorch/backends/arm/operators:op_tosa_rescale",
         "//executorch/backends/transforms:aten_to_dialect_pass",
         "//executorch/backends/transforms:dim_maps",
         "//executorch/backends/arm/tosa:utils",

backends/arm/operators/BUCK

@@ -25,13 +25,29 @@ fbcode_target(
     srcs = ["operator_validation_utils.py"],
 )
 
+# Leaf target for the rescale helpers imported by _passes. Kept separate from
+# :ops because :ops depends on _passes:passes, which would be a dep cycle.
+fbcode_target(
+    _kind = runtime.python_library,
+    name = "op_tosa_rescale",
+    srcs = ["op_tosa_rescale.py"],
+    deps = [
+        ":node_visitor",
+        ":operator_validation_utils",
+        "fbsource//third-party/tosa_tools:serializer",
+        "//caffe2:torch",
+        "//executorch/backends/arm/tosa:mapping",
+    ],
+)
+
 fbcode_target(
     _kind = runtime.python_library,
     name = "ops",
-    srcs = glob(["op_*.py", "ops_*.py"]),
+    srcs = glob(["op_*.py", "ops_*.py"], exclude = ["op_tosa_rescale.py"]),
     deps = [
         "fbsource//third-party/tosa_tools:tosa",
         ":node_visitor",
+        ":op_tosa_rescale",
         ":operator_validation_utils",
         "//executorch/backends/arm/tosa:constant_pool",
         "//executorch/backends/arm/tosa:mapping",

backends/arm/quantizer/quantization_annotator.py

@@ -19,7 +19,7 @@
 import torch.fx
 from executorch.backends.arm.common.debug import get_node_debug_info
 from executorch.backends.arm.common.type import ensure_type
-from executorch.backends.arm.quantizer import QuantizationConfig
+from executorch.backends.arm.quantizer.quantization_config import QuantizationConfig
 
 from torch._ops import OpOverload
 from torch._subclasses import FakeTensor

backends/arm/tosa/dialect/BUCK

@@ -26,6 +26,7 @@ fbcode_target(_kind = runtime.python_library,
     deps = [
         ":core",
         "//caffe2:torch",
+        "//executorch/backends/arm:ao_ext",
         "//executorch/backends/arm/tosa:resize_utils",
         "//executorch/backends/arm/tosa:tosa",
     ],