pinctrl: renesas: Add PORT_GP_CFG_13 macros

Add PORT_GP_CFG_13() and PORT_GP_13() helper macros, to be used by the
r8a779g0 subdriver.

Based on a larger patch in the BSP by LUU HOAI.
Signed-off-by: LUU HOAI <hoai.luu.ub@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87edz5ty0r.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/renesas/sh_pfc.h

@@ -492,9 +492,13 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
 	PORT_GP_CFG_1(bank, 11, fn, sfx, cfg)
 #define PORT_GP_12(bank, fn, sfx)	PORT_GP_CFG_12(bank, fn, sfx, 0)
 
-#define PORT_GP_CFG_14(bank, fn, sfx, cfg)				\
+#define PORT_GP_CFG_13(bank, fn, sfx, cfg)				\
 	PORT_GP_CFG_12(bank, fn, sfx, cfg),				\
-	PORT_GP_CFG_1(bank, 12, fn, sfx, cfg),				\
+	PORT_GP_CFG_1(bank, 12, fn, sfx, cfg)
+#define PORT_GP_13(bank, fn, sfx)	PORT_GP_CFG_13(bank, fn, sfx, 0)
+
+#define PORT_GP_CFG_14(bank, fn, sfx, cfg)				\
+	PORT_GP_CFG_13(bank, fn, sfx, cfg),				\
 	PORT_GP_CFG_1(bank, 13, fn, sfx, cfg)
 #define PORT_GP_14(bank, fn, sfx)	PORT_GP_CFG_14(bank, fn, sfx, 0)