[S390] cio: use all available paths for some internal I/O

Use all available paths for the SENSE ID and STLCK commands. This
prevents deadlocks in conjunction with reserved devices.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>