staging/mei: fix hbm_host_version_response structure

Looks during cleanup we converted type of host_version_supported
member from UINT8 into int instead of u8.
Since we've queried only for boolean value of
this variable the bug wasn't really visible.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>