rtc: ds1307: Add ds1339 compatible

As far as u-boot is concerned the ds1339 is compatible with the other
devices supported by the ds1307 driver. The Linux driver does expose
some additional functionality but as far as u-boot is concerned just
adding the compatible string is enough.
Signed-off-by: NChris Packham <judge.packham@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NPriyanka Jain <priyanka.jain@nxp.com>

drivers/rtc/ds1307.c

@@ -23,6 +23,7 @@
 enum ds_type {
 	ds_1307,
 	ds_1337,
+	ds_1339,
 	ds_1340,
 	m41t11,
 	mcp794xx,
@@ -344,6 +345,7 @@ static const struct rtc_ops ds1307_rtc_ops = {
 static const struct udevice_id ds1307_rtc_ids[] = {
 	{ .compatible = "dallas,ds1307", .data = ds_1307 },
 	{ .compatible = "dallas,ds1337", .data = ds_1337 },
+	{ .compatible = "dallas,ds1339", .data = ds_1339 },
 	{ .compatible = "dallas,ds1340", .data = ds_1340 },
 	{ .compatible = "microchip,mcp7941x", .data = mcp794xx },
 	{ .compatible = "st,m41t11", .data = m41t11 },