pinctrl: renesas: r8a779g0: Add missing SCIF_CLK2 pin group/function

BugLink: https://bugs.launchpad.net/bugs/2060097

[ Upstream commit 68540257cdf1d07ff8a649aa94c21c5804bbb9b0 ]

R-Car V4H actually has two SCIF_CLK pins.
The second pin provides the SCIF_CLK signal for HSCIF2 and SCIF4.

Fixes: 050442ae4c ("pinctrl: renesas: r8a779g0: Add pins, groups and functions")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6352ec9b63fdd38c2c70d8d203e46f21fbfeccdc.1705589612.git.geert+renesas@glider.be
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit c96427ebb59d72bd3da7d3e2ffab933dd9a04379)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

drivers/pinctrl/renesas/pfc-r8a779g0.c

@@ -2384,6 +2384,14 @@ static const unsigned int scif_clk_mux[] = {
 	SCIF_CLK_MARK,
 };
 
+static const unsigned int scif_clk2_pins[] = {
+	/* SCIF_CLK2 */
+	RCAR_GP_PIN(8, 11),
+};
+static const unsigned int scif_clk2_mux[] = {
+	SCIF_CLK2_MARK,
+};
+
 /* - SSI ------------------------------------------------- */
 static const unsigned int ssi_data_pins[] = {
 	/* SSI_SD */
@@ -2694,6 +2702,7 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(scif4_clk),
 	SH_PFC_PIN_GROUP(scif4_ctrl),
 	SH_PFC_PIN_GROUP(scif_clk),
+	SH_PFC_PIN_GROUP(scif_clk2),
 
 	SH_PFC_PIN_GROUP(ssi_data),
 	SH_PFC_PIN_GROUP(ssi_ctrl),
@@ -3015,6 +3024,10 @@ static const char * const scif_clk_groups[] = {
 	"scif_clk",
 };
 
+static const char * const scif_clk2_groups[] = {
+	"scif_clk2",
+};
+
 static const char * const ssi_groups[] = {
 	"ssi_data",
 	"ssi_ctrl",
@@ -3102,6 +3115,7 @@ static const struct sh_pfc_function pinmux_functions[] = {
 	SH_PFC_FUNCTION(scif3),
 	SH_PFC_FUNCTION(scif4),
 	SH_PFC_FUNCTION(scif_clk),
+	SH_PFC_FUNCTION(scif_clk2),
 
 	SH_PFC_FUNCTION(ssi),