ARM: dts: kzm9d: use generic pinctrl properties

Since 16ccaf5b ("pinctrl: sh-pfc: Accept standard function, pins and
groups properties") renesas pfc drivers accept generic "function", "pins"
and "groups" properties.

This patch updates the kzm9d device tree to use the generic properties.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/emev2-kzm9d.dts

@@ -105,8 +105,8 @@ &iic1 {
 
 &pfc {
 	uart1_pins: serial@e1030000 {
-		renesas,groups = "uart1_ctrl", "uart1_data";
-		renesas,function = "uart1";
+		groups = "uart1_ctrl", "uart1_data";
+		function = "uart1";
 	};
 };