[SPARC64] sunhv: Support SYSRQ properly.

By calling uart_handle_break().  We'll still do the
"sun_do_break()" handling if the user gives two
breaks in a row.

We should probably do this in the other Sparc serial
drivers too.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c
index 7f73907..378a178 100644
--- a/drivers/serial/sunhv.c
+++ b/drivers/serial/sunhv.c
@@ -91,6 +91,8 @@
 			break;
 
 		if (c == CON_BREAK) {
+			if (uart_handle_break(port))
+				continue;
 			saw_console_brk = 1;
 			c = 0;
 		}