This converts dell_wmi_check_descriptor_buffer() to the new driver
model interface and puts the interface version in dell_wmi_priv
where it belongs.
Signed-off-by: NAndy Lutomirski <luto@kernel.org>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Signed-off-by: NDarren Hart (VMware) <dvhart@infradead.org>