[S390] s390,oprofile: fix alert counter increment

The counter for requested interrupts should be incremented if the
program-request-alert bit is set and not the invalid-address-entry
bit.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>