[S390] replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index 4764b9e..4a38993 100644
--- a/drivers/s390/cio/device_status.c
+++ b/drivers/s390/cio/device_status.c
@@ -62,7 +62,7 @@
 	stsch (sch->schid, &sch->schib);
 
 	CIO_MSG_EVENT(0, "%s(0.%x.%04x) - path(s) %02x are "
-		      "not operational \n", __FUNCTION__,
+		      "not operational \n", __func__,
 		      sch->schid.ssid, sch->schid.sch_no,
 		      sch->schib.pmcw.pnom);