s390-ccw: set up interactive boot menu parameters

Reads boot menu flag and timeout values from the iplb and
sets the respective fields for the menu.

Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
4 files changed