Input: tegra-kbc - enable support for the standard "wakeup-source" property

Though the tegra-kbc driver should/will continue to support the legacy
"nvidia,wakeup-source" property to enable keyboard as the wakeup source,
we need to add support for the new standard property "wakeup-source".

This patch adds support for "wakeup-source" property in addition to the
existing "nvidia,wakeup-source" property.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/tegra-kbc.c

@@ -517,7 +517,8 @@ static int tegra_kbc_parse_dt(struct tegra_kbc *kbc)
 	if (of_find_property(np, "nvidia,needs-ghost-filter", NULL))
 		kbc->use_ghost_filter = true;
 
-	if (of_find_property(np, "nvidia,wakeup-source", NULL))
+	if (of_property_read_bool(np, "wakeup-source") ||
+	    of_property_read_bool(np, "nvidia,wakeup-source")) /* legacy */
 		kbc->wakeup = true;
 
 	if (!of_get_property(np, "nvidia,kbc-row-pins", &proplen)) {