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/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 82c481d..87418b5 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -362,7 +362,7 @@
 	}
 
 	if ((!rc) && (vcpu->arch.sie_block->ckc <
-		get_clock() + vcpu->arch.sie_block->epoch)) {
+		get_tod_clock() + vcpu->arch.sie_block->epoch)) {
 		if ((!psw_extint_disabled(vcpu)) &&
 			(vcpu->arch.sie_block->gcr[0] & 0x800ul))
 			rc = 1;
@@ -402,7 +402,7 @@
 		goto no_timer;
 	}
 
-	now = get_clock() + vcpu->arch.sie_block->epoch;
+	now = get_tod_clock() + vcpu->arch.sie_block->epoch;
 	if (vcpu->arch.sie_block->ckc < now) {
 		__unset_cpu_idle(vcpu);
 		return 0;
@@ -492,7 +492,7 @@
 	}
 
 	if ((vcpu->arch.sie_block->ckc <
-		get_clock() + vcpu->arch.sie_block->epoch))
+		get_tod_clock() + vcpu->arch.sie_block->epoch))
 		__try_deliver_ckc_interrupt(vcpu);
 
 	if (atomic_read(&fi->active)) {