ctc_configure: Reformat message

Reformat message for better display.

Signed-off-by: Hannes Reinecke <hare@suse.de>
dasd_configure: fixup and simplify read-only detection

vmcp uses uppercase letters in output, so we need to convert
the channel id to uppercase. And the detection itself can
be simplified, thereby omitting the temporary file.

Signed-off-by: Hannes Reinecke <hare@suse.de>
mkinitrd-setup-dasd: Activate DIAG devices

We need to activate DIAG devices in the initrd, otherwise boot
will fail.

References: bnc#808256

Signed-off-by: Hannes Reinecke <hare@suse.de>