tests/avocado: extend the timeout for x86_64 tcg tests
These are timing out on gitlab.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20221027183637.2772968-7-alex.bennee@linaro.org>