clocksource/timecompare: Fix symbol exports to be GPL'd.

Noticed by Thomas GLeixner.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/kernel/time/timecompare.c b/kernel/time/timecompare.c
index 71e7f1a..96ff643 100644
--- a/kernel/time/timecompare.c
+++ b/kernel/time/timecompare.c
@@ -40,7 +40,7 @@
 
 	return ns_to_ktime(nsec);
 }
-EXPORT_SYMBOL(timecompare_transform);
+EXPORT_SYMBOL_GPL(timecompare_transform);
 
 int timecompare_offset(struct timecompare *sync,
 		       s64 *offset,
@@ -131,7 +131,7 @@
 
 	return used;
 }
-EXPORT_SYMBOL(timecompare_offset);
+EXPORT_SYMBOL_GPL(timecompare_offset);
 
 void __timecompare_update(struct timecompare *sync,
 			  u64 source_tstamp)
@@ -188,4 +188,4 @@
 		}
 	}
 }
-EXPORT_SYMBOL(__timecompare_update);
+EXPORT_SYMBOL_GPL(__timecompare_update);