trunner: armv7a9: add wait for smt2 device

JIRA: CI-382

trunner/target/armv7a9.py

@@ -19,7 +19,7 @@
 )
 from trunner.harness import TerminalHarness
 from trunner.host import Host
-from trunner.tools import Phoenixd, OpenocdGdbServer
+from trunner.tools import Phoenixd, OpenocdGdbServer, wait_for_vid_pid
 from trunner.types import TestResult, TestOptions
 from .base import TargetBase, find_port
 
@@ -53,6 +53,9 @@ def __init__(self, dut: Dut, script: str, cwd: Optional[str] = None):
     def __call__(self):
         """Loads plo image to RAM using gdb."""
 
+        # after reboot we need to wait for smt2 device
+        wait_for_vid_pid(vid=0x0403, pid=0x6014, timeout=5)
+
         with self.gdbserver.run():
             try:
                 subprocess.run(