mei: hbm: call mei_set_devstate() on hbm stop response

Use mei_set_devstate() wrapper upon hbm stop command response,
to trigger sysfs event.

Fixes: 43b8a7ed

 ("mei: expose device state in sysfs")
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210129120752.850325-3-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>