pinctrl: renesas: Enable R8A774A1 PFC tables

The PFC tables for the R8A774A1 are already available, but they
not enabled.

This patch adds the Kconfig option and builds the corresponding file
when PINCTRL_PFC_R8A774A1 is enabled.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/pinctrl/renesas/pfc.c b/drivers/pinctrl/renesas/pfc.c
index 1179afd..7ba7849 100644
--- a/drivers/pinctrl/renesas/pfc.c
+++ b/drivers/pinctrl/renesas/pfc.c
@@ -32,6 +32,7 @@
 	SH_PFC_R8A7794,
 	SH_PFC_R8A7795,
 	SH_PFC_R8A7796,
+	SH_PFC_R8A774A1,
 	SH_PFC_R8A77965,
 	SH_PFC_R8A77970,
 	SH_PFC_R8A77980,
@@ -853,6 +854,10 @@
 	if (model == SH_PFC_R8A7796)
 		priv->pfc.info = &r8a7796_pinmux_info;
 #endif
+#ifdef CONFIG_PINCTRL_PFC_R8A774A1
+	if (model == SH_PFC_R8A774A1)
+		priv->pfc.info = &r8a774a1_pinmux_info;
+#endif
 #ifdef CONFIG_PINCTRL_PFC_R8A77965
 	if (model == SH_PFC_R8A77965)
 		priv->pfc.info = &r8a77965_pinmux_info;
@@ -924,6 +929,12 @@
 		.data = SH_PFC_R8A7796,
 	},
 #endif
+#ifdef CONFIG_PINCTRL_PFC_R8A774A1
+	{
+		.compatible = "renesas,pfc-r8a774a1",
+		.data = SH_PFC_R8A774A1,
+	},
+#endif
 #ifdef CONFIG_PINCTRL_PFC_R8A77965
 	{
 		.compatible = "renesas,pfc-r8a77965",