[SPARC]: Fix locking thinkos in display7seg and cpwatchdog drivers.

Noticed by Eric Brower.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 39f5421..2c86a4b 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -161,7 +161,7 @@
 		writeb(regs, d7s_regs);
 		break;
 	};
-	lock_kernel();
+	unlock_kernel();
 
 	return error;
 }