Enable testing on Snapdragon devices (#21051)

* Add the tests that we want to run on external CI

* remove extra files

* Fixes python issues, reove the deadlock on CI

* remove unecessary changes

* use override to ty.toml

* fix pre-commit and try tests with secret in external repo not upstream

* skip if key is unavailable

* Fix feedback

* switch hexagon to snapdragon

* cleanup

* fix secrets

* remove the copyrights at the top of the files

scripts/snapdragon/qdc/tests/run_backend_ops_posix.py

@@ -0,0 +1,41 @@
+"""
+On-device test-backend-ops runner for llama.cpp (HTP0 backend).
+
+Executed by QDC's Appium test framework on the QDC runner.
+The runner has ADB access to the allocated device.
+"""
+
+import os
+import sys
+
+import pytest
+
+from utils import BIN_PATH, CMD_PREFIX, push_bundle_if_needed, run_adb_command, write_qdc_log
+
+
+@pytest.fixture(scope="session", autouse=True)
+def install(driver):
+    push_bundle_if_needed(f"{BIN_PATH}/test-backend-ops")
+
+
+@pytest.mark.parametrize("type_a", ["mxfp4", "fp16", "q4_0"])
+def test_backend_ops_htp0(type_a):
+    cmd = f"{CMD_PREFIX} GGML_HEXAGON_HOSTBUF=0 GGML_HEXAGON_EXPERIMENTAL=1 {BIN_PATH}/test-backend-ops -b HTP0 -o MUL_MAT"
+    if type_a == "q4_0":
+        cmd += r' -p "^(?=.*type_a=q4_0)(?!.*type_b=f32,m=576,n=512,k=576).*$"'
+    else:
+        cmd += f" -p type_a={type_a}"
+    result = run_adb_command(
+        cmd,
+        check=False,
+    )
+    write_qdc_log(f"backend_ops_{type_a}.log", result.stdout or "")
+    assert result.returncode == 0, f"test-backend-ops type_a={type_a} failed (exit {result.returncode})"
+
+
+if __name__ == "__main__":
+    ret = pytest.main(["-s", "--junitxml=results.xml", os.path.realpath(__file__)])
+    if os.path.exists("results.xml"):
+        with open("results.xml") as f:
+            write_qdc_log("results.xml", f.read())
+    sys.exit(ret)