drivers/rtc/rtc-hym8563.c: add optional clock-output-names property

This enables the setting of a custom clock name for the clock provided by
the hym8563 rtc.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-hym8563.c

@@ -418,6 +418,9 @@ static struct clk *hym8563_clkout_register_clk(struct hym8563 *hym8563)
 	init.num_parents = 0;
 	hym8563->clkout_hw.init = &init;
 
+	/* optional override of the clockname */
+	of_property_read_string(node, "clock-output-names", &init.name);
+
 	/* register the clock */
 	clk = clk_register(&client->dev, &hym8563->clkout_hw);