qemu.py: Fix syntax error

Python requires parentheses around multiline expression. This fixes the
breakage of all Python-based qemu-iotests cases that was introduced in
commit dab91d9aa0.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-id: 20170918052524.4045-1-kwolf@redhat.com
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

scripts/qemu.py

@@ -193,8 +193,8 @@ class QEMUMachine(object):
         qemulog = open(self._qemu_log_path, 'wb')
         try:
             self._pre_launch()
-            self._qemu_full_args = self._wrapper + [self._binary] +
-                                    self._base_args() + self._args
+            self._qemu_full_args = (self._wrapper + [self._binary] +
+                                    self._base_args() + self._args)
             self._popen = subprocess.Popen(self._qemu_full_args,
                                            stdin=devnull,
                                            stdout=qemulog,