platform/x86: ideapad-laptop: fix a NULL pointer dereference

The third parameter of dytc_cql_command should not be NULL since it will
be dereferenced immediately.

Fixes: ff36b0d9 ("platform/x86: ideapad-laptop: rework and create new ACPI helpers")
Signed-off-by: Qiu Wenbo <qiuwenbo@kylinos.com.cn>
Acked-by: Ike Panhc <ike.pan@canonical.com>
Link: https://lore.kernel.org/r/20210428050636.8003-1-qiuwenbo@kylinos.com.cn


Signed-off-by: Hans de Goede <hdegoede@redhat.com>