pinctrl: renesas: r8a77970: Share MMC pin group data

Pin groups mmc_data[14] are subsets of mmc_data8.

This reduces kernel size by 40 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9354645f58c12a275923046fe913cfc9602ca710.1640269757.git.geert+renesas@glider.be

drivers/pinctrl/renesas/pfc-r8a77970.c

@@ -1102,30 +1102,14 @@ static const unsigned int intc_ex_irq5_mux[] = {
 };
 
 /* - MMC -------------------------------------------------------------------- */
-static const unsigned int mmc_data1_pins[] = {
-	/* D0 */
-	RCAR_GP_PIN(3, 6),
-};
-static const unsigned int mmc_data1_mux[] = {
-	MMC_D0_MARK,
-};
-static const unsigned int mmc_data4_pins[] = {
-	/* D[0:3] */
-	RCAR_GP_PIN(3, 6), RCAR_GP_PIN(3, 7),
-	RCAR_GP_PIN(3, 8), RCAR_GP_PIN(3, 9),
-};
-static const unsigned int mmc_data4_mux[] = {
-	MMC_D0_MARK, MMC_D1_MARK,
-	MMC_D2_MARK, MMC_D3_MARK,
-};
-static const unsigned int mmc_data8_pins[] = {
+static const unsigned int mmc_data_pins[] = {
 	/* D[0:7] */
 	RCAR_GP_PIN(3, 6), RCAR_GP_PIN(3, 7),
 	RCAR_GP_PIN(3, 8), RCAR_GP_PIN(3, 9),
 	RCAR_GP_PIN(3, 11), RCAR_GP_PIN(3, 12),
 	RCAR_GP_PIN(3, 13), RCAR_GP_PIN(3, 14),
 };
-static const unsigned int mmc_data8_mux[] = {
+static const unsigned int mmc_data_mux[] = {
 	MMC_D0_MARK, MMC_D1_MARK,
 	MMC_D2_MARK, MMC_D3_MARK,
 	MMC_D4_MARK, MMC_D5_MARK,
@@ -1775,9 +1759,9 @@ static const struct sh_pfc_pin_group pinmux_groups[] = {
 	SH_PFC_PIN_GROUP(intc_ex_irq3),
 	SH_PFC_PIN_GROUP(intc_ex_irq4),
 	SH_PFC_PIN_GROUP(intc_ex_irq5),
-	SH_PFC_PIN_GROUP(mmc_data1),
-	SH_PFC_PIN_GROUP(mmc_data4),
-	SH_PFC_PIN_GROUP(mmc_data8),
+	BUS_DATA_PIN_GROUP(mmc_data, 1),
+	BUS_DATA_PIN_GROUP(mmc_data, 4),
+	BUS_DATA_PIN_GROUP(mmc_data, 8),
 	SH_PFC_PIN_GROUP(mmc_ctrl),
 	SH_PFC_PIN_GROUP(msiof0_clk),
 	SH_PFC_PIN_GROUP(msiof0_sync),