s390/sclp_sdias: fix sclp_sdias_copy() virtual vs physical address confusion

Due to historical reasons sclp_sdias_copy() misuses
the notion of physical vs virtual addresses difference.

Note: this does not fix a bug currently, since virtual
and physical addresses are identical.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

drivers/s390/char/sclp_sdias.c

@@ -184,7 +184,7 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
 	sccb->evbuf.asa_size = SDIAS_ASA_SIZE_64;
 	sccb->evbuf.event_status = 0;
 	sccb->evbuf.blk_cnt = nr_blks;
-	sccb->evbuf.asa = (unsigned long)dest;
+	sccb->evbuf.asa = __pa(dest);
 	sccb->evbuf.fbn = start_blk;
 	sccb->evbuf.lbn = 0;
 	sccb->evbuf.dbs = 1;