pinctrl: sh-pfc: Add PORT_GP_CFG_25() helper macro

They follow the style of the existing PORT_GP_CFG_<n>() macros and
will be used by a follow-up patch for the R8A77980 SoC.

Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/pinctrl/sh-pfc/sh_pfc.h

@@ -471,9 +471,13 @@ extern const struct sh_pfc_soc_info shx3_pinmux_info;
 	PORT_GP_CFG_1(bank, 23, fn, sfx, cfg)
 #define PORT_GP_24(bank, fn, sfx)	PORT_GP_CFG_24(bank, fn, sfx, 0)
 
-#define PORT_GP_CFG_26(bank, fn, sfx, cfg)				\
+#define PORT_GP_CFG_25(bank, fn, sfx, cfg)				\
 	PORT_GP_CFG_24(bank, fn, sfx, cfg),				\
-	PORT_GP_CFG_1(bank, 24, fn, sfx, cfg),				\
+	PORT_GP_CFG_1(bank, 24, fn, sfx, cfg)
+#define PORT_GP_25(bank, fn, sfx)	PORT_GP_CFG_25(bank, fn, sfx, 0)
+
+#define PORT_GP_CFG_26(bank, fn, sfx, cfg)				\
+	PORT_GP_CFG_25(bank, fn, sfx, cfg),				\
 	PORT_GP_CFG_1(bank, 25, fn, sfx, cfg)
 #define PORT_GP_26(bank, fn, sfx)	PORT_GP_CFG_26(bank, fn, sfx, 0)