[ot] python/qemu/jtag: bitbang.py: reset default TDI value to 0

Signed-off-by: Emmanuel Blot <eblot@rivosinc.com>

Author: rivos-eblot

python/qemu/jtag/bitbang.py

@@ -98,6 +98,8 @@ def write_tms(self, modesel: BitSequence) -> None:
         if self._last is not None:
             self._tdi = self._last
             self._last = None
+        else:
+            self._tdi = False
         if self._link_log:
             self._log.debug('write TMS [%d] %s', len(modesel), modesel)
         tck = self._tck