Add a16w8 per-op test for conv1d

Summary:
Add int16 activation / int8 weight (a16w8) quantization tests for `aten.conv1d` on Ethos-U55 and Ethos-U85.

## Changes
- Add `test_conv1d_a16w8_u55_INT` using `EthosU55PipelineINT` with `a16w8_quantization=True, symmetric_io_quantization=True, qtol=1, epsilon=2**-16`, reusing existing `test_data_INT` parameters
- Add `test_conv1d_a16w8_u85_INT` using `EthosU85PipelineINT` with same kwargs
- Register `ops/test_conv1d.py` in `fbcode/` and `xplat/` `targets.bzl`

bypass-pytorch-oss-checks

Differential Revision: D104532360

Author: christine-long-meta

backends/arm/test/ops/test_conv1d.py

@@ -399,3 +399,39 @@ def test_convolution_1d_vgf_quant_a8w4(test_data):
         get_symmetric_a8w4_quantization_config(is_per_channel=per_channel_quantization)
     )
     pipeline.run()
+
+
+@common.parametrize("test_data", test_data_INT)
+@common.XfailIfNoCorstone300
+def test_conv1d_a16w8_u55_INT(test_data):
+    model, per_channel_quantization = test_data()
+    pipeline = EthosU55PipelineINT[input_t](
+        model,
+        model.get_inputs(),
+        aten_op,
+        exir_op,
+        a16w8_quantization=True,
+        symmetric_io_quantization=True,
+        per_channel_quantization=per_channel_quantization,
+        qtol=1,
+        epsilon=2**-16,
+    )
+    pipeline.run()
+
+
+@common.parametrize("test_data", test_data_INT)
+@common.XfailIfNoCorstone320
+def test_conv1d_a16w8_u85_INT(test_data):
+    model, per_channel_quantization = test_data()
+    pipeline = EthosU85PipelineINT[input_t](
+        model,
+        model.get_inputs(),
+        aten_op,
+        exir_op,
+        a16w8_quantization=True,
+        symmetric_io_quantization=True,
+        per_channel_quantization=per_channel_quantization,
+        qtol=1,
+        epsilon=2**-16,
+    )
+    pipeline.run()

backends/arm/test/targets.bzl

@@ -40,6 +40,7 @@ def define_arm_tests():
         "ops/test_reciprocal.py",
         "ops/test_mean_dim.py",
         "ops/test_var.py",
+        "ops/test_conv1d.py",
     ]
 
     # Quantization