pinctrl: rza1: Fix flag name in comment

rza1_swio_pin relates to the swio flag instead of the bidir flag.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Link: https://lore.kernel.org/r/20200507074516.29903-1-geert+renesas@glider.be
diff --git a/drivers/pinctrl/pinctrl-rza1.c b/drivers/pinctrl/pinctrl-rza1.c
index ff4a7fb..38a14bb 100644
--- a/drivers/pinctrl/pinctrl-rza1.c
+++ b/drivers/pinctrl/pinctrl-rza1.c
@@ -93,7 +93,7 @@ struct rza1_bidir_entry {
 };
 
 /**
- * rza1_swio_pin - describe a single pin that needs bidir flag applied.
+ * rza1_swio_pin - describe a single pin that needs swio flag applied.
  */
 struct rza1_swio_pin {
 	u16 pin: 4;