s390/time: rename tod clock access functions

Fix name clash with some common code device drivers and add "tod"
to all tod clock access function names.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 1671d34..abc550e 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -338,10 +338,10 @@
 		retries++;
 
 		if (!start_time) {
-			start_time = get_clock();
+			start_time = get_tod_clock();
 			goto again;
 		}
-		if ((get_clock() - start_time) < QDIO_BUSY_BIT_PATIENCE)
+		if ((get_tod_clock() - start_time) < QDIO_BUSY_BIT_PATIENCE)
 			goto again;
 	}
 	if (retries) {
@@ -504,7 +504,7 @@
 	int count, stop;
 	unsigned char state = 0;
 
-	q->timestamp = get_clock();
+	q->timestamp = get_tod_clock();
 
 	/*
 	 * Don't check 128 buffers, as otherwise qdio_inbound_q_moved
@@ -563,7 +563,7 @@
 	if (bufnr != q->last_move) {
 		q->last_move = bufnr;
 		if (!is_thinint_irq(q->irq_ptr) && MACHINE_IS_LPAR)
-			q->u.in.timestamp = get_clock();
+			q->u.in.timestamp = get_tod_clock();
 		return 1;
 	} else
 		return 0;
@@ -595,7 +595,7 @@
 	 * At this point we know, that inbound first_to_check
 	 * has (probably) not moved (see qdio_inbound_processing).
 	 */
-	if (get_clock() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
+	if (get_tod_clock() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) {
 		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x",
 			      q->first_to_check);
 		return 1;
@@ -772,7 +772,7 @@
 	int count, stop;
 	unsigned char state = 0;
 
-	q->timestamp = get_clock();
+	q->timestamp = get_tod_clock();
 
 	if (need_siga_sync(q))
 		if (((queue_type(q) != QDIO_IQDIO_QFMT) &&